Numbers to 40
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The document introduces whole numbers and counting to 40. It will cover reading, writing, comparing, and ordering numbers, as well as place value. Examples are provided to count items in groups of 10 and write the numbers in numeral and word form. The place value chart is introduced. Later examples show arranging numbers in ascending and descending order, and completing number patterns by adding or subtracting 10. Review questions are posed at the end.
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This presentation was created by me for the Scholars for Change Campaign, IIM Ahmedabad for the underprivileged children.
Scholars for Change is a campaign of Education Innovation Bank at IIM Ahmedabad. This campaign seeks to give to underprivileged children access to high quality, interesting content in Science and Math, so that they can learn on their own, in their own language, with fun and play.
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The document discusses properties of cube numbers and how to find cube roots. It defines perfect and non-perfect cubes, and explains that the cube of an even number is even, while the cube of an odd number is odd. It provides examples of finding cube roots through prime factorization, grouping factors of 3 to obtain the cube root. Finding cube roots of numbers not being perfect cubes results in decimal values.
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This document provides important points and formulas for mathematics. It includes:
1) Definitions and properties of numbers like natural numbers, integers, rational numbers, and irrational numbers.
2) Formulas for topics like percentages, simple interest, compound interest, speed, distance, time, and areas of shapes.
3) Explanations of concepts in algebra like quadratic equations, expansion and factorization of expressions, and ordering.
4) Formulas for area and perimeter of shapes, Pythagoras' theorem, surface area and volume of solids like cylinders and cones.
The document serves as a quick reference guide for key mathematical definitions, properties, formulas, and concepts across various topics
Amazing trick
This document contains instructions for several math tricks and puzzles. The tricks include multiplying any two-digit number by 11, quickly multiplying two numbers between 11-19 in your head, and squaring 2-digit numbers with specific patterns depending on if they end in 5 or begin with 5. Instructions are also provided for tricks involving birthdays, phone numbers, missing digits, and prime numbers.
Math 2 Times Table, Place Value and Decimals : Grades 3 – 4
Learn and practice multiplication and division, dividing fractions, or using algebra to solve complex word problems, students are building their math fluency and using deductive reasoning skills to problem solve.
Vedic math
Vedic math uses mental techniques for calculations based on ancient Indian sutras (aphorisms). One technique is "all from 9 and the last from 10" for subtracting numbers from powers of 10. When subtracting a number from 1000, all digits are subtracted from 9 and the last digit is subtracted from 10. This technique can also be applied to money calculations for determining change amounts mentally.
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This document provides several math tricks that allow one to quickly calculate numbers or predict values through simple steps. The tricks include multiplying any 3-digit number by 7, 11, and 13 to get the number doubled; determining one's birthday through a series of calculations; and squaring 2-digit numbers ending in 5 through patterns involving the digits. The document aims to impress readers by making complex math seem astonishingly simple through these tricks.
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Math 2 Times Table, Place Value and Decimals : Grades 3 – 4
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Kungfu math p4 slide14 (multiplication decimals)pdf
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Numbers to 40
- 1. Whole Numbers Numbers to 40 What will we learn today? • Count, read and write numbers • Comparing and ordering numbers • Place values • Number patterns
- 2. Let’s count the items below. Make groups of 10 first. 10 10 10 4
- 3. There are 34 erasers altogether. We can write the number in 2 ways. Numeral : 34 Words : Thirty – four Since 34 is a 2 digit number, there are 2 place values involved. Place Value Chart 34 = 3 tens 4 ones Tens Ones 3 4 30 4
- 4. One more example for you. There are 26 paper clips. 10 Numeral : 26 Words : Twenty- six 10 26 = 2 Tens 6 Ones 6 20 6
- 5. Arrange the numbers in ascending order. 11 33 40 25 11, 25, 33, 40 smallest greatest
- 6. Arrange the numbers in descending order. 14 38 22 19 38, 22, 19, 14 greatest smallest
- 7. Complete the number patterns. 9 19 29 39 +10 +10 +10
- 8. One more example for you. 31 26 22 19 -5 -4 -3
- 9. Are you ready to try out the questions?