This document provides tutorials on methods for performing basic mathematical operations like addition, subtraction, multiplication and division mentally or with minimal writing. The methods use principles like taking digits from 9 or 10, multiplying vertically and crosswise, and using remainders to simplify calculations involving fractions, numbers close to multiples of 10, squares, and division by 9. Worked examples demonstrate applying the methods to practice problems in each topic area.
Diwa Textbooks - Math for Smart Kids Grade 3
Math for Smart Kids is the grade school textbook which features online exercises in www.diwalearningtown.com to complement review of textbook lessons. The book addresses the learning needs in mathematics such understanding and skills in computing considerable speed and accuracy, estimating, communicating, thinking analytically and critically, and in solving problems using appropriate technology.
The document provides an overview of decimals, including what they are, their history, place value, comparing, rounding, adding, subtracting, multiplying, and dividing decimals. Key points covered include how decimals are used to represent fractional values, the importance of place value when working with decimals, and techniques for rounding, adding, subtracting, multiplying and dividing decimals accurately.
This document provides several math tricks and puzzles that involve multiplying, squaring, or otherwise manipulating numbers in surprising ways. The tricks are explained step-by-step and include multiplying any two-digit number by 11, squaring two-digit numbers ending in 5 or beginning with 5, and multiplying by 9 using your fingers. Practice is recommended to master the tricks.
This document contains several math puzzles and tricks with their solutions. It includes puzzles involving dividing a number into parts in a specific ratio, identifying a unique number, calculating correct and incorrect answers on a test, determining a date based on age information, inserting an operator to make an equation correct, using only zeros and operators to get a target number, and continuing a number pattern. Solutions are provided for each puzzle. Additionally, the document discusses Roman numerals and their values and relationships.
The document provides instructions for teaching students about division. It defines division as sharing objects equally or grouping objects. It gives examples of writing division number sentences and using multiplication to check the answer. It includes word problems and activities to help students practice dividing by 5, 6, and 9. Students are shown divisibility rules to determine if a number is divisible by 5, 6, or 9.
The document discusses factors and multiples of numbers. It provides examples of arranging objects like stars and footballs in different ways to get the same total, with the number of objects in each arrangement being the factors of the total. Factors are defined as exact divisors that leave no remainder. Multiples are numbers that a factor divides into with no remainder. Every number is a factor of itself and has an infinite number of multiples.
This document discusses brain teasers and their purpose. It begins by defining a brain teaser as an exercise designed to stimulate thinking by encouraging the brain to work to complete a puzzle or problem. Teachers often use brain teasers in the classroom to provide mental exercise. The document then provides examples of brain teasers involving riddles and logic problems for the reader to solve, followed by an explanation of the answers. It concludes by stating that brain teasers can help refresh the brain from daily mental tasks by providing novel challenges for critical thinking.
Diwa Textbooks - Math for Smart Kids Grade 3
Math for Smart Kids is the grade school textbook which features online exercises in www.diwalearningtown.com to complement review of textbook lessons. The book addresses the learning needs in mathematics such understanding and skills in computing considerable speed and accuracy, estimating, communicating, thinking analytically and critically, and in solving problems using appropriate technology.
The document provides an overview of decimals, including what they are, their history, place value, comparing, rounding, adding, subtracting, multiplying, and dividing decimals. Key points covered include how decimals are used to represent fractional values, the importance of place value when working with decimals, and techniques for rounding, adding, subtracting, multiplying and dividing decimals accurately.
This document provides several math tricks and puzzles that involve multiplying, squaring, or otherwise manipulating numbers in surprising ways. The tricks are explained step-by-step and include multiplying any two-digit number by 11, squaring two-digit numbers ending in 5 or beginning with 5, and multiplying by 9 using your fingers. Practice is recommended to master the tricks.
This document contains several math puzzles and tricks with their solutions. It includes puzzles involving dividing a number into parts in a specific ratio, identifying a unique number, calculating correct and incorrect answers on a test, determining a date based on age information, inserting an operator to make an equation correct, using only zeros and operators to get a target number, and continuing a number pattern. Solutions are provided for each puzzle. Additionally, the document discusses Roman numerals and their values and relationships.
The document provides instructions for teaching students about division. It defines division as sharing objects equally or grouping objects. It gives examples of writing division number sentences and using multiplication to check the answer. It includes word problems and activities to help students practice dividing by 5, 6, and 9. Students are shown divisibility rules to determine if a number is divisible by 5, 6, or 9.
The document discusses factors and multiples of numbers. It provides examples of arranging objects like stars and footballs in different ways to get the same total, with the number of objects in each arrangement being the factors of the total. Factors are defined as exact divisors that leave no remainder. Multiples are numbers that a factor divides into with no remainder. Every number is a factor of itself and has an infinite number of multiples.
This document discusses brain teasers and their purpose. It begins by defining a brain teaser as an exercise designed to stimulate thinking by encouraging the brain to work to complete a puzzle or problem. Teachers often use brain teasers in the classroom to provide mental exercise. The document then provides examples of brain teasers involving riddles and logic problems for the reader to solve, followed by an explanation of the answers. It concludes by stating that brain teasers can help refresh the brain from daily mental tasks by providing novel challenges for critical thinking.
The document introduces multiplication as a way to efficiently calculate the total number of objects when grouped into equal sets. It provides examples of multiplying the number of sets by the number of objects in each set to find the total number of legs for multiple cats, number of crayons in multiple boxes, number of books for multiple teachers, and number of apples on multiple desks. The document encourages representing multiplication problems using sets and solving related problems.
The document discusses multiples and factors. It defines multiples as numbers formed by multiplying a given number by the counting numbers. Factors are the numbers multiplied together to get a product. The document provides examples of finding multiples and factors of various numbers. It also defines prime and composite numbers.
This document provides study tips for mathematics and includes several "math magic" tricks. The general study tips include attending class, taking notes, doing homework, and seeking help when needed. The math tricks demonstrate quick multiplication by rewriting numbers and performing operations to always get a specific result like 4 or a repeated number sequence. The tricks are intended to amuse and spark interest in mathematics.
The document provides instructions for 11 math tricks involving shortcut multiplication methods. Trick #1 explains how to multiply two numbers less than 100 by taking the difference from 100 and diagonally subtracting/adding. Trick #2 is the same process for numbers greater than 100. Trick #3 involves adding digits when multiplying by 11. Trick #4 shows how to multiply any two-digit numbers. The document also includes some word problems and "brain gym" puzzles.
The document contains instructions for several math tricks and puzzles involving numbers and arithmetic operations. It guides the reader through steps to solve puzzles such as guessing a randomly selected number, analyzing a person's age, testing if a number is divisible, and arriving at a gray elephant from Denmark. The tricks rely on multiplying, adding, subtracting and doubling numbers in specific sequences.
The Lattice Method of Multiplication for ChildrenMark Runge
Your child is probably being taught the Lattice method of multiplication.
Most likely you learned the Standard method but to help your children with their homework you must understand how they are being taught.
Join our group at kidsalgebra.com to keep up with the times (pun unintended).
This document provides information about greatest common factors (GCF) and least common multiples (LCM). It defines what a factor and a multiple are, and gives examples of each. It then describes the three main methods for finding the GCF and LCM of two numbers: listing factors/multiples, prime factorization, and the ladder/birthday cake method. The document provides word problems to demonstrate when to use GCF versus LCM. It concludes with a quiz asking students to identify which concept is required to solve various word problems and to work through some example calculations.
This document discusses prime numbers, composite numbers, and how to determine which category a whole number falls into. It provides that:
- Prime numbers have exactly two unique factors - the number itself and 1.
- Composite numbers have more than two factors.
- Only the numbers 0, 1, and 2 are neither prime nor composite - 0 because every number divides it, and 1 because it only has one factor. All other whole numbers are either prime or composite.
Enhance your children's division skills with our incredible teaching, activity and display resource pack! Includes a comprehensive guide to the topic, printable activity resources for independent and group work, as well as handy display and reference materials.
Available from http://www.teachingpacks.co.uk/the-division-pack/
The document discusses divisibility rules for numbers 2 through 10. It provides examples for each rule and interactive problems for the reader to determine which number is not divisible by the given number. The rules are: a number is divisible by 2 if the last digit is even; divisible by 3 if the sum of the digits is 3, 6, or 9; divisible by 5 if the last digit is a 5 or 0; divisible by 9 if the sum of the digits is 9; and divisible by 10 if the last digit is 0.
Roman numerals originated in ancient Rome as a common method for counting and communicating. The system is based on seven basic symbols - I, V, X, L, C, D, and M - which are combined and subtracted to represent numbers. To convert Arabic numbers to Roman, larger place values are written first from left to right, and smaller numerals before larger ones indicate subtraction. A number cannot be repeated more than three times.
This document discusses estimation and approximation using significant figures. It provides examples of rounding numbers to 1 and 2 significant figures. Key points covered include:
- Using estimation to check answers and writing numbers to significant figures.
- The definition of significant figures and how to identify them in a number.
- Methods for rounding numbers to 1 and 2 significant figures by ignoring leading zeros and rounding based on the digit in the next place value.
- Examples of estimating calculations by rounding numbers to 1 significant figure before calculating.
Multiplication and division are opposites. Multiplication means grouping numbers, while division means sharing a number into groups. The document provides rules and examples for multiplying and dividing small whole numbers. Key rules include: multiplying by 0 equals 0; multiplying by 1 equals the original number; doubling a number is the same as multiplying by 2; and multiplying by 10 moves the digits left and adds a 0.
1) Addition involves combining numbers to find a total sum. The order of the numbers does not change the sum. When adding multi-digit numbers, you start with the ones place and work left.
2) Subtraction finds the difference between a starting number and the number removed. You may need to regroup tens into ones when subtracting multi-digit numbers.
3) Multiplication is used to find the total when there are a certain number of equal groups. When multiplying multi-digit numbers, you start with the ones place and work left.
Mathemagic is inspired from Vedic Mathematics and Smart Maths to develope a passion for quantitative section of various entrance exams especially for those who belongs to non mathematic streams.
1) Powers of 10 refer to numbers like 1, 10, 100, 1000 that are 10 multiplied by itself a certain number of times, represented by exponents.
2) To multiply a number by a power of 10, move the decimal point to the right by the number of places represented by the exponent. To divide, move the decimal point left by the same number of places.
3) Examples demonstrate multiplying and dividing numbers by powers of 10 by moving the decimal point and using exponents to represent powers of 10.
The document provides an overview of number systems throughout history. It discusses how ancient civilizations like the Egyptians and Babylonians experimented with different bases like base-12 and base-60 systems. It then covers the decimal system and describes number types like rational, irrational, integer, natural numbers and their properties. The document also discusses concepts like fractions in ancient Egypt, binary numbers and the expansion of numbers into terminating, non-terminating recurring and non-recurring decimals.
This document contains 15 math facts presented by Pawan Mishra. Some of the facts included are: the Fibonacci sequence shows up in nature; 1/89 can be written as an infinite decimal; the volume of a circle formula uses Pi; the Birthday Problem states that in a room of 75 people there is a 99% chance of two people having the same birthday; and Kaprekar's constant is the number 6174 that results from a specific calculation using four digit numbers.
This document presents several math tricks for operations like squaring two-digit numbers ending in 5, multiplying numbers by 4, 5, 11, 15, and dividing numbers. It explains tricks for squaring numbers like 35 by multiplying the first digit by the next number and adding 25. For multiplication, it offers tricks like doubling a number twice to multiply by 4, or halving and multiplying by 10 to multiply by 5. Divisibility checks are also explained for numbers like 11 by alternating addition and subtraction of digits. Practice of the tricks is recommended to master them. In the end, the reader is challenged to add a series of numbers as a math trick, but mistakenly answers 5000 instead of the correct answer of 4100.
The document provides information on Vedic maths including its 16 sutras and why they are simpler than conventional math techniques. It then demonstrates how to perform addition, subtraction, multiplication and division using Vedic math techniques with examples for each operation. It also covers topics like finding square roots, the duplex method, finding equations of lines from points, and solving simultaneous equations.
The document provides an introduction to Vedic mathematics, which is based on ancient Indian Vedic texts. It describes several Vedic mathematical formulas with examples, such as Ekadhikena Purvena for calculating squares, Nikhilam navatascaramam Dasatah for multiplication involving 9s, and Yavadunam Tavadunikrtya Varganca Yojayet for calculating squares close to bases of powers of 10. Algebraic proofs are also presented for some of the formulas. The document notes that Vedic math techniques can solve difficult math problems with high speed and accuracy, and represents just the beginning of applications of Vedic mathematics.
The document introduces multiplication as a way to efficiently calculate the total number of objects when grouped into equal sets. It provides examples of multiplying the number of sets by the number of objects in each set to find the total number of legs for multiple cats, number of crayons in multiple boxes, number of books for multiple teachers, and number of apples on multiple desks. The document encourages representing multiplication problems using sets and solving related problems.
The document discusses multiples and factors. It defines multiples as numbers formed by multiplying a given number by the counting numbers. Factors are the numbers multiplied together to get a product. The document provides examples of finding multiples and factors of various numbers. It also defines prime and composite numbers.
This document provides study tips for mathematics and includes several "math magic" tricks. The general study tips include attending class, taking notes, doing homework, and seeking help when needed. The math tricks demonstrate quick multiplication by rewriting numbers and performing operations to always get a specific result like 4 or a repeated number sequence. The tricks are intended to amuse and spark interest in mathematics.
The document provides instructions for 11 math tricks involving shortcut multiplication methods. Trick #1 explains how to multiply two numbers less than 100 by taking the difference from 100 and diagonally subtracting/adding. Trick #2 is the same process for numbers greater than 100. Trick #3 involves adding digits when multiplying by 11. Trick #4 shows how to multiply any two-digit numbers. The document also includes some word problems and "brain gym" puzzles.
The document contains instructions for several math tricks and puzzles involving numbers and arithmetic operations. It guides the reader through steps to solve puzzles such as guessing a randomly selected number, analyzing a person's age, testing if a number is divisible, and arriving at a gray elephant from Denmark. The tricks rely on multiplying, adding, subtracting and doubling numbers in specific sequences.
The Lattice Method of Multiplication for ChildrenMark Runge
Your child is probably being taught the Lattice method of multiplication.
Most likely you learned the Standard method but to help your children with their homework you must understand how they are being taught.
Join our group at kidsalgebra.com to keep up with the times (pun unintended).
This document provides information about greatest common factors (GCF) and least common multiples (LCM). It defines what a factor and a multiple are, and gives examples of each. It then describes the three main methods for finding the GCF and LCM of two numbers: listing factors/multiples, prime factorization, and the ladder/birthday cake method. The document provides word problems to demonstrate when to use GCF versus LCM. It concludes with a quiz asking students to identify which concept is required to solve various word problems and to work through some example calculations.
This document discusses prime numbers, composite numbers, and how to determine which category a whole number falls into. It provides that:
- Prime numbers have exactly two unique factors - the number itself and 1.
- Composite numbers have more than two factors.
- Only the numbers 0, 1, and 2 are neither prime nor composite - 0 because every number divides it, and 1 because it only has one factor. All other whole numbers are either prime or composite.
Enhance your children's division skills with our incredible teaching, activity and display resource pack! Includes a comprehensive guide to the topic, printable activity resources for independent and group work, as well as handy display and reference materials.
Available from http://www.teachingpacks.co.uk/the-division-pack/
The document discusses divisibility rules for numbers 2 through 10. It provides examples for each rule and interactive problems for the reader to determine which number is not divisible by the given number. The rules are: a number is divisible by 2 if the last digit is even; divisible by 3 if the sum of the digits is 3, 6, or 9; divisible by 5 if the last digit is a 5 or 0; divisible by 9 if the sum of the digits is 9; and divisible by 10 if the last digit is 0.
Roman numerals originated in ancient Rome as a common method for counting and communicating. The system is based on seven basic symbols - I, V, X, L, C, D, and M - which are combined and subtracted to represent numbers. To convert Arabic numbers to Roman, larger place values are written first from left to right, and smaller numerals before larger ones indicate subtraction. A number cannot be repeated more than three times.
This document discusses estimation and approximation using significant figures. It provides examples of rounding numbers to 1 and 2 significant figures. Key points covered include:
- Using estimation to check answers and writing numbers to significant figures.
- The definition of significant figures and how to identify them in a number.
- Methods for rounding numbers to 1 and 2 significant figures by ignoring leading zeros and rounding based on the digit in the next place value.
- Examples of estimating calculations by rounding numbers to 1 significant figure before calculating.
Multiplication and division are opposites. Multiplication means grouping numbers, while division means sharing a number into groups. The document provides rules and examples for multiplying and dividing small whole numbers. Key rules include: multiplying by 0 equals 0; multiplying by 1 equals the original number; doubling a number is the same as multiplying by 2; and multiplying by 10 moves the digits left and adds a 0.
1) Addition involves combining numbers to find a total sum. The order of the numbers does not change the sum. When adding multi-digit numbers, you start with the ones place and work left.
2) Subtraction finds the difference between a starting number and the number removed. You may need to regroup tens into ones when subtracting multi-digit numbers.
3) Multiplication is used to find the total when there are a certain number of equal groups. When multiplying multi-digit numbers, you start with the ones place and work left.
Mathemagic is inspired from Vedic Mathematics and Smart Maths to develope a passion for quantitative section of various entrance exams especially for those who belongs to non mathematic streams.
1) Powers of 10 refer to numbers like 1, 10, 100, 1000 that are 10 multiplied by itself a certain number of times, represented by exponents.
2) To multiply a number by a power of 10, move the decimal point to the right by the number of places represented by the exponent. To divide, move the decimal point left by the same number of places.
3) Examples demonstrate multiplying and dividing numbers by powers of 10 by moving the decimal point and using exponents to represent powers of 10.
The document provides an overview of number systems throughout history. It discusses how ancient civilizations like the Egyptians and Babylonians experimented with different bases like base-12 and base-60 systems. It then covers the decimal system and describes number types like rational, irrational, integer, natural numbers and their properties. The document also discusses concepts like fractions in ancient Egypt, binary numbers and the expansion of numbers into terminating, non-terminating recurring and non-recurring decimals.
This document contains 15 math facts presented by Pawan Mishra. Some of the facts included are: the Fibonacci sequence shows up in nature; 1/89 can be written as an infinite decimal; the volume of a circle formula uses Pi; the Birthday Problem states that in a room of 75 people there is a 99% chance of two people having the same birthday; and Kaprekar's constant is the number 6174 that results from a specific calculation using four digit numbers.
This document presents several math tricks for operations like squaring two-digit numbers ending in 5, multiplying numbers by 4, 5, 11, 15, and dividing numbers. It explains tricks for squaring numbers like 35 by multiplying the first digit by the next number and adding 25. For multiplication, it offers tricks like doubling a number twice to multiply by 4, or halving and multiplying by 10 to multiply by 5. Divisibility checks are also explained for numbers like 11 by alternating addition and subtraction of digits. Practice of the tricks is recommended to master them. In the end, the reader is challenged to add a series of numbers as a math trick, but mistakenly answers 5000 instead of the correct answer of 4100.
The document provides information on Vedic maths including its 16 sutras and why they are simpler than conventional math techniques. It then demonstrates how to perform addition, subtraction, multiplication and division using Vedic math techniques with examples for each operation. It also covers topics like finding square roots, the duplex method, finding equations of lines from points, and solving simultaneous equations.
The document provides an introduction to Vedic mathematics, which is based on ancient Indian Vedic texts. It describes several Vedic mathematical formulas with examples, such as Ekadhikena Purvena for calculating squares, Nikhilam navatascaramam Dasatah for multiplication involving 9s, and Yavadunam Tavadunikrtya Varganca Yojayet for calculating squares close to bases of powers of 10. Algebraic proofs are also presented for some of the formulas. The document notes that Vedic math techniques can solve difficult math problems with high speed and accuracy, and represents just the beginning of applications of Vedic mathematics.
Vedic mathematics is an ancient system of mathematics from India that allows for highly efficient calculations. It uses a unique set of techniques based on simple principles to solve arithmetic, algebraic, geometric, and trigonometric problems mentally and rapidly without the use of calculators or paper and pencil. Some key techniques include using vertical and crosswise operations to perform additions and multiplications, finding squares by adding one more than the previous number, and using tricks to easily multiply or divide by numbers like 9, 11, and 12. Vedic mathematics is becoming increasingly popular due to allowing calculations up to 15 times faster than traditional methods while reducing memorization requirements and scratch work.
Vedic mathematics is a unique system of mental calculations based on 16 sutras or formulas derived from Vedic texts. It allows calculations like multiplication, division, square roots, and more to be done very quickly in the head. Some key sutras include Ekadhikena Purvena for squaring numbers ending in 5, Nikhilam Navatashcaramam Dashatah for multiplying numbers near multiples of 10, and Urdhva Tiryagbhyam for general multiplication using a vertical and diagonal approach. Vedic maths aims to reduce the usual effort and time of calculations through ingenious principles like proportionality, symmetry, and approximation.
The document discusses different methods for multiplication and their associated delays. It introduces the concept of Vedic mathematics as an ancient methodology for calculations based on 16 formulas. It then describes the Urdhva Tiryakbhyam multiplier technique, which reduces complexity, memory usage, and propagation delay for multiplication by calculating partial products in parallel rather than sequentially. This technique can be implemented in hardware to create an efficient complex multiplier with improved speed and lower power consumption compared to other architectures.
Vedic mathematics is a system of mathematics consisting of 16 sutras or aphorisms obtained from ancient Hindu scriptures called the Vedas. It was presented in the early 20th century by Bharati Krishna Tirthaji Maharaja, an Indian scholar. The sutras provide concise formulae for solving problems through unique techniques like vertically-and-crosswise calculations without needing multiplication tables beyond 5x5. Some examples include techniques for squaring numbers and multiplying multi-digit numbers mentally through a carry-over method. Vedic mathematics was applied in areas like astronomy, astrology and constructing calendars.
This document provides an overview and examples of tutorials on Vedic maths techniques. It introduces 16 sutras or principles of Vedic maths that can be applied in various ways. The tutorials give simple examples of applying the sutras to solve problems, without attempting to teach their systematic use. They are based on examples from the book "Fun with Figures". The tutorials then provide examples and exercises for techniques like instant subtraction, multiplication without tables, adding and subtracting fractions, squaring numbers, and dividing by 9.
This document provides an overview and examples of tutorials on Vedic maths techniques. It introduces 16 sutras or principles of Vedic maths that can be applied in various ways. The tutorials give simple examples of applying the sutras to solve problems, without attempting to teach their systematic use. They are based on examples from the book "Fun with Figures". The tutorials then provide examples and exercises for techniques like instant subtraction, multiplication without tables, adding and subtracting fractions, squaring numbers, and dividing by 9.
The document provides several methods from Vedic mathematics for operations like squaring, multiplying, dividing, finding squares and square roots of numbers. Some key techniques discussed are:
1) A quick way to square numbers ending in 5 by splitting the answer into two parts and using the formula of multiplying the first number by one more than itself.
2) A method for multiplying where the first and last digits add to 10 by multiplying the first digit by the next number and combining with the product of the last digits.
3) Finding squares of numbers between 50-60 by adding the last digit to 25 and squaring the last digit.
4) Various sutras and techniques like vertically and crosswise,
This document provides instructions for calculating the square of numbers using the "duplex method" and extracting the square root of perfect squares.
It first explains how to calculate the square of multi-digit numbers using the duplex method, which involves multiplying the outermost digits, adding the middle digit's square if present, and carrying digits while ascending and descending.
It then explains how to find the square root of four-digit to nine-digit perfect squares by grouping the digits, using the groups as divisors and quotients to iteratively derive the root digits without extensive working. Practice makes this method fast.
The document discusses methods for finding squares, cubes, remainders, and day of the week for a given date using shortcuts and patterns. It provides examples of finding the square of numbers ending in 1-9 and multiplying multi-digit numbers where the tens digit is the same. It also includes a table to add to the month number to determine the day of the week and shows how to find the remainder when dividing a large multiplication expression by 7 by multiplying the remainders individually.
This is the ultimate set of game-changer, the nuclear bomb of calculations, the Best, Just follow the rules and beat the computer
The ultimate tricks to speed up your Calculating Power
This document provides 9 math tricks for quickly performing calculations mentally. It explains tricks for multiplying by 11, squaring 2-digit numbers ending in 5, multiplying by 5, 9, 4, dividing by 5, subtracting from 1,000, and calculating tips. Additional tips are provided for multiplying larger numbers by common factors like 5 through 99 through breaking numbers into multiples of 100. The document concludes by explaining an easy method for calculating percentages by breaking numbers into multiples of 100.
This manual teaches second grade students the Vedic method of multiplication using multiples of ten as bases to simplify calculations. It provides examples of multiplying single digit, double digit, and triple digit numbers both below and above bases of ten and one hundred. Practice questions are included with answers to check understanding. The goal is to introduce an alternate method for checking school work, not to replace standard multiplication methods.
1) Vedic maths uses tricks and techniques to simplify math and make it more fun.
2) One trick for multiplying a two-digit number by 11 is to split the number into digits, add the digits, and place the sum in the middle.
3) To divide a number by 27 or 37, split it into triplets from the ones place, sum the triplets, and take the remainder of dividing the sum by 27 or 37.
This document provides an index and overview of topics related to basic mathematics calculations. It includes definitions and methods for operations like square roots, cube roots, percentages, ratios, proportions, and more. For square roots, it discusses prime factorization and division methods. For cube roots, it discusses factorization and finding roots of exact cubes up to 6 digits. It also provides an example of order of operations (VBODMAS) and solved problems for various calculations.
This document provides techniques for quickly solving multiplication and square root problems for bank exams using tricks and shortcuts. It explains methods for multiplying and finding squares of two-digit numbers when the sum of the last digits is 10 or 5. Rules and ranges are given for finding squares of any number based on their proximity to base numbers like 50, 100, 150 etc. Steps are outlined for separating a number into units and tens/hundreds and determining its square root based on ranges of perfect squares. Examples are included to demonstrate each method.
The document discusses several mathematical algorithms for basic operations like addition, subtraction, multiplication, and division. It provides step-by-step explanations of partial sums addition, trade-first subtraction, partial products multiplication, partial quotients division, and lattice multiplication. Examples are shown to illustrate how to use each algorithm to solve problems mentally or on paper.
This document discusses Vedic mathematics and methods for solving basic mathematical operations like addition, subtraction, and multiplication using a Vedic approach. Some key points:
1. Vedic mathematics provides direct, one-line mental solutions to problems using techniques like left-to-right calculation for addition, subtraction, and multiplication.
2. Addition is done by adding the place values from left to right and carrying over if needed. Multiplication involves multiplying the place values.
3. Special methods are described for multiplication near a base like 100 using subtraction and for numbers just above or below the base.
4. Checking answers by adding the digits is also discussed as a useful validation technique in Vedic mathematics.
This document discusses Vedic mathematics and methods for addition, subtraction, and multiplication based on ancient Indian techniques. Some key points:
- Vedic mathematics uses direct, mental approaches to solve problems in one line.
- Addition is done by adding the place values from right to left and carrying over if needed.
- Multiplication involves multiplying the place values and carrying over similar to standard algorithms.
- Subtraction borrows from the next place value when the top number is smaller, working from right to left.
- Special methods are described for multiplying near a base of 10 or 100 by subtracting/adding the amounts above or below the base.
The document discusses solving equations, including equations with unknowns on both sides and with brackets. It provides examples of solving various types of equations, such as equations with fractions or variables on both sides. Strategies for solving equations include collecting like terms, using the inverse operation to isolate the variable, and expanding any brackets before solving.
This document discusses techniques from Vedic mathematics for quickly multiplying numbers mentally. It describes methods for multiplying by 11, 15, and single-digit numbers without using long multiplication. For two-digit numbers between 89-100, it shows how to subtract each number from 100 before multiplying the results and adding diagonally to find the full product. With practice, these methods allow for multiplying two-digit and some three-digit numbers mentally. Examples are provided to illustrate the techniques.
1) The document teaches a method for multiplying multi-digit numbers mentally in a step-by-step fashion by breaking the problem down into multiplying individual digits.
2) Key steps include multiplying the nearer digits first, then the more extreme digits, and carrying digits to the left.
3) Practice problems of increasing difficulty are provided, from 2-digit to 4-digit multipliers, to demonstrate applying the method. The reader is encouraged to time themselves and check their work.
The document discusses solving equations that involve x^2 terms. It explains that to solve these equations:
1) The x^2 term must be isolated by adding or subtracting terms from both sides of the equation.
2) Then the whole equation can be square rooted to remove the x^2, resulting in two separate equations to solve for x since the square of a negative number is positive.
3) This means there may be two possible solutions for x, as both the positive and negative square roots must be considered. Working through several examples illustrates this process.
Assessment and Planning in Educational technology.pptxKavitha Krishnan
In an education system, it is understood that assessment is only for the students, but on the other hand, the Assessment of teachers is also an important aspect of the education system that ensures teachers are providing high-quality instruction to students. The assessment process can be used to provide feedback and support for professional development, to inform decisions about teacher retention or promotion, or to evaluate teacher effectiveness for accountability purposes.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
A Survey of Techniques for Maximizing LLM Performance.pptx
Vedic maths
1. Tutorial 1
Use the formula ALL FROM 9 AND THE LAST FROM 10 to
perform instant subtractions.
For example 1000 - 357 = 643
We simply take each figure in 357 from 9 and the last figure from 10.
1000 - 3 5 7
� � �
From 9 From 9 From 10
= 6 4 3
So the answer is 1000 - 357 = 643
And thats all there is to it!
This always works for subtractions from numbers consisting
of a 1 followed by noughts: 100; 1000; 10,000 etc.
Similarly 10,000 - 1049 = 8951
10,000 - 1 0 4 9
From 9 From 9 From 9 From 10
� � � �
= 8 9 5 1
For 1000 - 83, in which we have more zeros than figures in the
numbers being subtracted, we simply suppose 83 is 083.
So 1000 - 83 becomes 1000 - 083 = 917
Exercise 1 Tutorial 1
Try some yourself:
1) 1000 - 777
2) 1000 - 283
3) 1000 - 505
4) 10,000 - 2345
5) 10000 - 9876
6) 10,000 - 1101
7) 100 - 57
8) 1000 - 57
9) 10,000 - 321
10) 10,000 - 38
2. Tutorial 2
Using VERTICALLY AND CROSSWISE you do not need to
know the multiplication tables beyond 5 X 5.
Suppose you need 8 x 7
8 is 2 below 10 and 7 is 3 below 10.
Think of it like this:
8 2
7 3
_______
5 6 Answer
The answer is 56.
The diagram below shows how you get it.
8 2
x 1
7 3
_______
5 6 Answer
You subtract crosswise 8-3 or 7-2 to get 5,
the first figure of the answer.
And you multiply vertically: 2 x 3 to get 6,
the last figure of the answer.
That's all you do:
See how far the numbers are below 10, subtract one
number's deficiency from the other number, and
multiply the deficiencies together.
7 x 6 = 42
7 3
x 1
6 4
_______
3 1 2 = 42
3. Here there is a carry: the 1 in the 12 goes over to make 3 into 4.
Exercise 1 Tutorial 2
Multiply these
1) 8 2) 9 3) 8 4) 7 5) 9 6) 6
x 8 7 9 7 9 6
__ __ __ __ __ __
__ __ __ __ __ __
Here's how to use VERTICALLY AND CROSSWISE
or multiplying numbers close to 100.
Suppose you want to multiply 88 by 98.
Not easy, you might think. But with
VERTICALLY AND CROSSWISE you can give
the answer immediately, using the same method
as on the page.
Both 88 and 98 are close to 100.
88 is 12 below 100 and 98 is 2 below 100.
You can imagine the sum set out like this:
88 - 12
x 1
98 - 2
_____
86 - 24
As before the 86 comes from
subtracting crosswise: 88 - 2 = 86
(or 98 - 12 = 86: you can subtract
either way, you will always get
the same answer).
And the 24 in the answer is
just 12 x 2: you multiply vertically.
So 88 x 98 = 8624
Exercise 2 Tutorial 2
4. This is so easy it is just mental arithmetic.
Try some:
1) 87 2) 88 3) 77 4) 93 5) 94 6) 64 7) 98
x 98 97 98 96 92 99 97
__ __ __ __ __ __ __
__ __ __ __ __ __ __
Multiplying numbers just over 100.
103 x 104 = 10712
The answer is in two parts: 107 and 12,
107 is just 103 + 4 (or 104 + 3),
and 12 is just 3 x 4.
Similarly 107 x 106 = 11342
107 + 6 = 113 and 7 x 6 = 42
Exercise 3 Tutorial 2
Again, just for mental arithmetic
Try a few
1) 102 x 107
2) 106 x 103
3) 104 x 104
4) 109 x 108
5) 101 x123
6) 103 x102
Tutorial 3
The easy way to add and subtract fractions.
Use VERTICALLY AND CROSSWISE to write the answer
straight down!
2 + 1 = 10 + 3 = 13
3 5 15 15
Multiply crosswise and add to get the top of the answer:
2 x 5 = 10 and 1 x 3 = 3. Then 10 + 3 = 13.
5. The bottom of the fraction is just 3 x 5 = 15.
You multiply the bottom number together.
So:
5 + 3 = 20+21 = 41
7 4 28 28
Subtracting is just as easy: multiply crosswise as before,
and subtract:
6 - 2 = 18 - 14 = 4
7 3 21 21
Exercise 1 Tutorial 3
Try a few
1) 4 + 1 = 2) 1 + 1 = 3) 2 + 2 =
5 6 3 4 7 3
4) 4 - 1 = 5) 1 - 1 = 6) 8 - 9 =
5 6 4 5 3 5
Tutorial 4
A quick way to square numbers that end in 5 using the formula
BY ONE MORE THAN THE ONE BEFORE.
752
= 5625
752
means 75 x 75.
The answer is in two parts: 56 and 25.
The last part is always 25.
The first part is the first number, 7, multiplied by the number
"one more", which is 8:
so 7 x 8 = 56
2
7 5 = 5 6 2 5
7 x 8 = 56
Similarly 852
= 7225 because 8 x 9 = 72.
6. Exercise 1 Tutorial 4
Try these
1) 452
2) 652
3) 952
4) 352
5) 152
Method for multiplying numbers where the first figures are the
same and the last figures add up to 10.
32 x 38 = 1216
Both numbers here start with 3 and the last
figures (2 and 8) add up to 10.
So we just multiply 3 by 4 (the next number up)
to get 12 for the first part of the answer.
And we multiply the last figures: 2 x 8 = 16 to
get the last part of the answer.
Diagrammatically: (follow same colour links)
2 x 8 = 16
3 2 x 3 8 = 12 16
3 x 4 = 12
And 81 x 89 = 7209
We put 09 since we need two figures as in all the other examples.
Exercise 2 Tutorial 4
Practise some:
1) 43 x 47
2) 24 x 26
3) 62 x 68
4) 17 x 13
5) 59 x 51
6) 77 x 73
7. Tutorial 5
An elegant way of multiplying numbers using a simple pattern.
21 x 23 = 483
This is normally called long multiplication but
actually the answer can be written straight down
using the VERTICALLY AND CROSSWISE
formula.
We first put, or imagine, 23 below 21:
2 1
| x |
2 3 x
_______
4 8 3
_______
There are 3 steps:
a) Multiply vertically on the left: 2 x 2 = 4.
This gives the first figure of the answer.
b) Multiply crosswise and add: 2 x 3 + 1 x 2 = 8
This gives the middle figure.
c) Multiply vertically on the right: 1 x 3 = 3
This gives the last figure of the answer.
And thats all there is to it
Similarly 61 x 31 = 1891
6 1
| x |
3 1 x
_______
18 9 1
_______
6 x 3 = 18; 6 x 1 + 1 x 3 = 9; 1 x 1 = 1
8. Exercise 1 Tutorial 5
Try these, just write down the answer:
1) 14 2) 22 3) 21 4) 21 5) 32
x 21 31 31 22 21
__ __ __ __ __
__ __ __ __ __
exercise 2a Tutorial 5
Multiply any 2-figure numbers together by mere mental arithmetic!
If you want 21 stamps at 26 pence each you can
easily find the total price in your head.
There were no carries in the method given above.
However, this only involves one small extra step.
21 x 26 = 546
2 1
| x |
2 6 x
_______
4 14 6 = 546
_______ ___
The method is the same as above
except that we get a 2-figure number, 14, in the
middle step, so the 1 is carried over to the left
(4 becomes 5).
So 21 stamps cost 5.46.�
Practise a few:
1) 21 2) 23 3) 32 4) 42 6) 71
x 47 43 53 32 72
Exercise 2b Tutorial 5
33 x 44 = 1452
There may be more than one carry in a sum:
9. 3 3
| x |
4 4 x
_______
12 24 12 = 1452
_______ ____
Vertically on the left we get 12.
Crosswise gives us 24, so we carry 2 to the left
and mentally get 144.
Then vertically on the right we get 12 and the 1
here is carried over to the 144 to make 1452.
6) 32 7) 32 8) 31 9) 44 10) 54
x 56 54 72 53 64
__ __ __ __ __
__ __ __ __ __
Any two numbers, no matter how big, can be
multiplied in one line by this method.
Tutorial 6
Multiplying a number by 11.
To multiply any 2-figure number by 11 we just put
the total of the two figures between the 2 figures.
26 x 11 = 286
Notice that the outer figures in 286 are the 26
being multiplied.
And the middle figure is just 2 and 6 added up.
So 72 x 11 = 792
Exercise 1 Tutorial 6
Multiply by 11:
1) 43 2) 81 3) 15 4) 44 5) 11
10. 77 x 11 = 847
This involves a carry figure because 7 + 7 = 14
we get 77 x 11 = 7147 = 847.
Exercise 2 Tutorial 6
Multiply by 11:
1) 88 2) 84 3) 48 4) 73 5) 56
234 x 11 = 2574
We put the 2 and the 4 at the ends.
We add the first pair 2 + 3 = 5.
and we add the last pair: 3 + 4 = 7.
Exercise 3 Tutorial 6
Multiply by 11:
1) 151 2) 527 3) 333 4) 714 5) 909
Tutorial 7
Method for dividing by 9.
23 / 9 = 2 remainder 5
The first figure of 23 is 2, and this is the answer.
The remainder is just 2 and 3 added up!
43 / 9 = 4 remainder 7
The first figure 4 is the answer
and 4 + 3 = 7 is the remainder - could it be easier?
Exercise 1a Tutorial 7
Divide by 9:
1) 61 2) 33 3) 44 4) 53 5) 80
134 / 9 = 14 remainder 8
The answer consists of 1, 4 and 8.
1 is just the first figure of 134.
11. 4 is the total of the first two figures 1+ 3 = 4,
and 8 is the total of all three figures 1+ 3 + 4 = 8.
Exercise 1b Tutorial 7
Divide by 9:
6) 232 7) 151 8) 303 9) 212 10) 2121
842 / 9 = 812 remainder 14 = 92 remainder 14
Actually a remainder of 9 or more is not usually
permitted because we are trying to find how
many 9's there are in 842.
Since the remainder, 14 has one more 9 with 5
left over the final answer will be 93 remainder 5
Exercise 2 Tutorial 7
Divide these by 9:
1) 771 2) 942 3) 565 4) 555 5) 777 6) 2382 7) 7070
Answers
Answers to exercise 1 Tutorial 1
1) 223
2) 717
3) 495
4) 7655
5) 0124
6) 8899
7) 43
8) 943
9) 9679
10) 9962
Answers to exercise 1 Tutorial 2
1) 64
2) 63
3) 72
4) 49
5) 81
6) 216 = 36
12. Answers to exercise 2 Tutorial 2
1) 8526
2) 8536
3) 7546
4) 8928
5) 8648
6) 6336
7) 9506 (we put 06 because, like all the others,
we need two figures in each part)
Answers to exercise 3 Tutorial 2
1) 10914
2) 10918
3) 10816
4) 11772
5) 12423
6) 10506 (we put 06, not 6)
Answers to exercise 1 Tutorial 3
1) 29/30
2) 7/12
3) 20/21
4) 19/30
5) 1/20
6) 13/15
Answers to exercise 1 Tutorial 4
1) 2025
2) 4225
3) 9025
4) 1225
5) 225
Answers to exercise 2 (Tutorial 4)
1) 2021
2) 624
3) 4216
4) 221
5) 3009
6) 5621