Kungfu math p3 slide16 (angles)pdf
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This document provides information about basic angles including: - An angle measures the amount of turn - There are different names for angles depending on their measure including acute (less than 90 degrees), right (90 degrees), obtuse (greater than 90 but less than 180 degrees), straight (180 degrees), and reflex (greater than 180 degrees) - Examples are given of identifying right angles, angles greater than 90 degrees, and angles smaller than 90 degrees in 2D figures
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Angles powerpoint
The document defines and provides examples of right, acute, and obtuse angles. Right angles measure 90 degrees. Acute angles are less than 90 degrees, while obtuse angles are greater than 90 degrees but less than 180 degrees. Multiple drawings of angles are provided and identified as being either right, acute, or obtuse.
Rounding Decimals
Rounding means reducing the digits in a number while keeping its value similar but easier to use. To round, decide which is the last digit to keep, leave it the same if the next digit is less than 5, or increase it by 1 if the next digit is 5 or more. Examples show rounding numbers to different decimal places like hundredths or tenths. Practice problems apply rounding to whole numbers, decimals, and fractions converted to decimals.
Multiplying Fractions By Whole Numbers
To multiply a fraction by a whole number, write the whole number as a fraction over 1, then multiply the numerators and denominators, simplifying the resulting fraction if possible. For example, to multiply 4 by 1/8, write 4/1, then multiply 4/1 * 1/8 = 4/8 = 1/2 by multiplying the numerators and denominators.
Complementary And Supplementary Angles
Complementary angles add up to 90 degrees, while supplementary angles add up to 180 degrees. The document provides examples of finding complementary angles by subtracting an acute angle from 90 degrees, and finding supplementary angles by subtracting an acute angle from 180 degrees. It concludes by thanking the audience.
Adding integers
The document provides an overview of adding integers and examples worked through step-by-step. It discusses the rules for adding integers with the same sign versus different signs. Specifically, it states that for the same sign you add the numbers and keep the sign, and for different signs you subtract the numbers and keep the sign of the number with the larger absolute value. Examples are provided to demonstrate applying these rules to evaluate integer expressions.
Measuring length
Measuring length involves determining how long something is using units of measurement. Standard units of length include millimeters, centimeters, meters, and kilometers, which can be used to precisely quantify and compare the lengths of different objects.
Multiplication
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Angles ppt
1) The document defines an angle as being formed by two rays with a common endpoint called the vertex. Angles can have points in their interior, exterior, or on the angle.
2) There are three main ways to name an angle: using three points with the vertex in the middle, using just the vertex point when it is the only angle with that vertex, or using a number within the angle.
3) There are four types of angles: acute, right, obtuse, and straight. Angles are measured in degrees with a full circle being 360 degrees.
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Angles powerpoint
The document defines and provides examples of right, acute, and obtuse angles. Right angles measure 90 degrees. Acute angles are less than 90 degrees, while obtuse angles are greater than 90 degrees but less than 180 degrees. Multiple drawings of angles are provided and identified as being either right, acute, or obtuse.
Rounding Decimals
Rounding means reducing the digits in a number while keeping its value similar but easier to use. To round, decide which is the last digit to keep, leave it the same if the next digit is less than 5, or increase it by 1 if the next digit is 5 or more. Examples show rounding numbers to different decimal places like hundredths or tenths. Practice problems apply rounding to whole numbers, decimals, and fractions converted to decimals.
Multiplying Fractions By Whole Numbers
To multiply a fraction by a whole number, write the whole number as a fraction over 1, then multiply the numerators and denominators, simplifying the resulting fraction if possible. For example, to multiply 4 by 1/8, write 4/1, then multiply 4/1 * 1/8 = 4/8 = 1/2 by multiplying the numerators and denominators.
Complementary And Supplementary Angles
Complementary angles add up to 90 degrees, while supplementary angles add up to 180 degrees. The document provides examples of finding complementary angles by subtracting an acute angle from 90 degrees, and finding supplementary angles by subtracting an acute angle from 180 degrees. It concludes by thanking the audience.
Adding integers
The document provides an overview of adding integers and examples worked through step-by-step. It discusses the rules for adding integers with the same sign versus different signs. Specifically, it states that for the same sign you add the numbers and keep the sign, and for different signs you subtract the numbers and keep the sign of the number with the larger absolute value. Examples are provided to demonstrate applying these rules to evaluate integer expressions.
Measuring length
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The document discusses learning multiplication facts through daily practice. It explains that multiplication is the process of adding equal sets or groups together. It provides examples of multiplying numbers like 2 x 3 and 3 x 2 by representing the numbers as groups of objects and counting the total objects. The document also demonstrates how to multiply two-digit numbers by multiplying the digits in the ones and tens places and regrouping or carrying numbers to the next place value.
Angles ppt
1) The document defines an angle as being formed by two rays with a common endpoint called the vertex. Angles can have points in their interior, exterior, or on the angle.
2) There are three main ways to name an angle: using three points with the vertex in the middle, using just the vertex point when it is the only angle with that vertex, or using a number within the angle.
3) There are four types of angles: acute, right, obtuse, and straight. Angles are measured in degrees with a full circle being 360 degrees.
Rounding Decimal Numbers
Here are the steps to round each number as indicated in Exercise 3.2 on pages 105 and 106:
a. 4.231 to 2 decimal places is 4.23
b. 0.75 to 1 decimal place is 0.8
c. 2.076 to 2 decimal places is 2.08
d. 0.698 to 2 decimal places is 0.70
e. 23.357 to 1 decimal place is 23.4
f. 48.6929 to 3 decimal places is 48.693
g. 639.678 to the nearest hundred is 640
h. 12.364 to the nearest ten is 12.4
i. 95.89 to the nearest ten is 100
j.
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Elapsed Time
Joseph left home at 9:57 AM and returned at 4:08 PM. Using two T-charts, one for hours and one for minutes, it is determined that the elapsed time was 6 hours and 11 minutes. Emma went to a movie starting at 1:17 PM lasting 2 hours and 56 minutes, so the movie ended at 4:13 PM. Jack took a road trip from 10:32 AM to 3:06 PM, and his trip time was calculated as 4 hours and 34 minutes using the T-chart method.
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Angles. Types and parts
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All about-angles [final] (1)
- The document discusses different types of angles including right, acute, obtuse, and reflex angles. It provides definitions and examples of each type of angle.
- Readers are guided through interactive quizzes and examples to learn how to identify different angles based on their measure and appearance.
- The project asks readers to make an angles collage that divides a page into sections for the different angle types and includes examples of each.
Types of angles
The document defines and provides examples of the five main types of angles: right angles measure 90 degrees, acute angles are less than 90 degrees, obtuse angles are greater than 90 degrees but less than 180 degrees, straight angles measure 180 degrees, and reflex angles are greater than 180 degrees but less than 360 degrees. Examples are given of each type of angle to illustrate how to identify them.
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Here are the steps to round each number as indicated in Exercise 3.2 on pages 105 and 106:
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b. 0.75 to 1 decimal place is 0.8
c. 2.076 to 2 decimal places is 2.08
d. 0.698 to 2 decimal places is 0.70
e. 23.357 to 1 decimal place is 23.4
f. 48.6929 to 3 decimal places is 48.693
g. 639.678 to the nearest hundred is 640
h. 12.364 to the nearest ten is 12.4
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j.
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The document explains how to calculate the area of a circle. It first discusses the difference between circumference and area. It then shows how a circle can be cut up and rearranged to form a parallelogram. This allows the area formula for a parallelogram, Area = Base x Height, to be used. The base is equal to half the circumference which is equal to radius x pi. The height is equal to the radius. Therefore, the area of a circle is equal to the radius squared times pi. Some examples are provided to illustrate calculating the area of different circles using this formula.
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Volume is the amount of space an object occupies, while capacity refers to the maximum amount of liquid a container can hold. Capacity can be measured using different tools and refers to how much a container can hold. Volume is determined by the three dimensions of an object and the amount of space it fills.
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This document discusses finding the surface area of prisms and cylinders. It provides formulas for calculating surface area of rectangular prisms as S = 2lw + 2lh + 2wh and cylinders as S = 2πr^2 + 2πrh. Examples are given of finding surface areas of various prisms and cylinders using their nets. The document ends with a lesson quiz asking the reader to find surface areas of given figures.
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This document defines and describes different types of angles. It explains that an angle is formed by two rays originating from the same endpoint, called the vertex. The main types of angles discussed are acute, right, obtuse, straight, reflex, and complete angles. Acute angles measure between 0 and 90 degrees. Right angles measure exactly 90 degrees. Obtuse angles measure greater than 90 degrees but less than 180 degrees. Straight angles measure exactly 180 degrees. Reflex angles measure more than 180 degrees but less than 360 degrees. Complete angles measure exactly 360 degrees.
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This document defines and describes different types of angles:
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- A straight angle measures exactly 180 degrees. A reflex angle measures more than 180 degrees but less than 360 degrees. A complete angle measures exactly 360 degrees.
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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.
Numbers to 20
This document provides an introduction to whole numbers and numbers to 20. It discusses counting, reading, writing, comparing and ordering numbers, as well as number patterns and place values. Key concepts covered include: 1) numbers can be written as numerals or words; 2) 1 and 2 digit numbers; 3) counting items and arranging numbers in order from greatest to smallest; 4) completing number patterns by adding or subtracting the same amount; and 5) understanding place value where a digit's value depends on its place in the number. Examples are provided to illustrate place value in numbers like 8, 7, 10, 13 and their digit values in the tens and ones
Multiplication
Multiplication can be represented as repeated addition. The document provides examples of using multiplication to solve one-step word problems involving finding the total number of objects from a given number of groups containing the same number of objects in each group. Examples show setting up multiplication equations to represent 4 groups of 3 balls, 6 groups of 3, 4 groups of 2, and 2 groups of 5.
Division
Division involves grouping quantities into equal sets. Examples shown include dividing 12 balls equally into boxes, with 3 balls in each box, dividing 18 faces into groups of 3, with 6 groups, and dividing 9 oranges equally into 3 bags, with 3 oranges in each bag. The document introduces division and solving one-step word problems using division to determine how quantities are divided equally among groups.
Addition within 100
This document provides instruction on adding two-digit numbers. It explains the formal algorithm for addition by adding the ones and tens places separately, including renaming when the ones place exceeds 9. An example problem of 31 + 20 is worked out step-by-step. It also gives a two-step word problem about Mrs. Tan and Mrs. Lee baking pies that is solved using addition. The goal is to teach students how to add two-digit numbers and solve word problems involving addition.
Addition within 20
This document provides an introduction to addition within 20. It includes examples of using number bonds to represent addition problems visually, with parts combining to make a whole. The addition symbol and count-on method for solving problems are demonstrated. Word problems involving addition are presented, such as finding how many sweets Jane has after getting more. The goal is for students to build number sense and skills for solving single-step addition word problems within 20.
Ordinal numbers
This document discusses ordinal numbers and their use in indicating the position of objects from left to right. It provides examples of using ordinal numbers to identify the position of fruits ordered from left to right, and the position of cars ordered from right to left. It includes an activity where the reader is asked to cross out the 5th bottle in a row.
Numbers to 20
This document provides an introduction to whole numbers and numbers to 20. It discusses counting, reading, writing, comparing and ordering numbers, as well as number patterns and place values. Key concepts covered include: 1) numbers can be written as numerals or words; 2) 1 and 2 digit numbers; 3) counting items and arranging numbers in order from greatest to smallest; 4) completing number patterns by adding or subtracting the same amount; and 5) understanding place value by recognizing the value of a digit based on its place in a number. Examples are provided to illustrate place value in numbers like 8, 7, 10, 13 and their digit values in the tens
Kungfu math p4 slide25 (tables)pdf
The document discusses analyzing tables to solve problems. It provides examples of calculating the total number of foreign stamps from a table and working through steps to find the number of stamps a person has after giving some away and receiving others. The document demonstrates reading tables, identifying relevant information, and using math operations like addition and division to solve problems based on the data in the tables.
Kungfu math p4 slide20 (lines)pdf
This document defines and provides examples of different types of lines in geometry:
- Perpendicular lines are lines that intersect at 90 degree angles. They can be labeled with a small box in the corner.
- Parallel lines never intersect and are always the same distance apart. They point in the same direction.
- The document provides instructions for using a set square and ruler to draw lines through specific points on a diagram.
Kungfu math p4 slide18 (money)pdf
The document discusses multiplication and division of money in decimal notation. It provides examples of writing dollar amounts in cents and examples of word problems involving calculating totals and change from purchases. One example problem asks what change a customer would receive after buying clothes totaling $61 and paying with $100. Another example asks how much a skirt costs if it is twice the price of a blouse and the total purchase and change amounts are given.
Kungfu math p4 slide23 (symmetry)pdf
The document discusses identifying symmetric figures and lines of symmetry. It explains that a line of symmetry can be found by folding a shape so that the folded edges match perfectly. It provides examples of symmetric shapes and asks students to find lines of symmetry and complete symmetric figures. The goal is for students to practice identifying symmetry in different shapes.
Kungfu math p4 slide17 (time)pdf
The document discusses measurement of time in seconds (s) and the 24-hour clock. It provides examples of adding and subtracting times by following steps of adding or subtracting the hours and minutes separately, and adjusting if the minutes total 60 or more by subtracting 60 from the minutes and adding 1 to the hours. An example word problem is given about a family's travel times to solve for how long they stayed at the zoo, which was 6 hours and 30 minutes.
Kungfu math p4 slide24 (tesellation)pdf
This document discusses the concept of tessellation in geometry. It defines tessellation as shapes that can be stacked or lined up without gaps. The document provides examples of shapes that can and cannot tessellate, and asks readers to identify which shapes tessellate in multiple choice questions. It encourages trying out the questions and directs readers to a website for more practice on this topic.
Kungfu math p4 slide17 (time)pdf
The document discusses measurement of time in seconds (s) and the 24-hour clock. It provides examples of adding and subtracting times by following steps of adding or subtracting the hours and minutes separately, and adjusting if the minutes total 60 or more by subtracting 60 from the minutes and adding 1 to the hours. An example word problem is given about a family's travel times to solve for how long they stayed at the zoo, which was 6 hours and 30 minutes.
More from kungfumath (20)
Kungfu math p3 slide16 (angles)pdf
- 1. Geometry Basic Angles What will we learn today? • angle as an amount of turning • identifying angles in 2-D and 3-D objects • identifying angles in 2-D figures • identifying right angles, angles greater than/ smaller than a right angle.
- 2. We are going to learn about angles today!
- 3. Angles An angle measures the amount of turn There are different names for different angles. As the angle increases, the name changes.
- 4. Extra information Type of Angle Description Acute Angle an angle that is less than 90° Right Angle an angle that is 90° exactly Not required to memorize as they are Obtuse Angle an angle that is greater than 90° but less than 180° not in the syllabus. Straight Angle an angle that is 180° exactly Reflex Angle an angle that is greater than 180°
- 5. Right Angle
- 6. Right Angle This angle is greater than 90°.
- 7. Right Angle This angle is greater than 90°. This angle is smaller than 90°.
- 8. Straight Angle This angle is greater than 90°.
- 9. How many right angles can you see in the figure?
- 10. How many right angles can you see in the figure? There are two right angles.
- 11. How many angles are greater than 90°?
- 12. How many angles are greater than 90°? There are four angles which are greater than 90°.
- 13. How many angles are smaller than 90°?
- 14. How many angles are smaller than 90°? There are five angles which are smaller than 90°.
- 15. Are you ready to try out the questions?