## Grade 6 USA School Math Understanding Polygons

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*Polygon* 1.2.1. Successor of a Number

1.2.2. Predecessor of a Number

1.3.

*n*Digit Numbers 1.4. Place of a Digit

1.6.1. Addition of Large Numbers

1.6.2. Subtraction of Large Numbers

1.6.4. Division of Large Numbers

1.7. Rounding Numbers

1.7.1. Rounding off numbers

1.7.1.1. Rounding off to the nearest ten

1.7.1.2. Rounding off to the nearest hundred

1.7.1.3. Rounding off to the nearest thousand

1.7.2. Estimating Sum

1.7.3. Estimating Difference

1.7.4. Estimating Products

1.7.5. Estimating Quotients

3.2.1.1. Addition of Whole Numbers

3.2.1.3. Solving Magic Square

3.2.1.4. Subtraction of Whole Numbers

3.2.2.1. Multiplication of Whole Numbers

3.2.2.3. Division of Whole Numbers

4. Integers

4.4. Comparing Integers

4.6.1.1. Addition of Integers

4.6.1.3. Properties of Addition of Integers

4.6.1.4. Subtraction of Integers

4.6.2.1. Multiplication of Integers

4.6.2.3. Division of Integers

4.6.2.4. Properties of Division of Integers

4.6.3. Mixed Operations on Integers

4.6.4. Word Problems on Integers

5.1.1. Finding Factors of a Number

5.1.5. Types of Numbers

5.1.5.1. Odd and Even Numbers

5.1.5.2. Prime and Composite Numbers

5.1.5.2.1. Understanding Prime and Composite Numbers

5.1.5.2.2. Composite Numbers

5.1.5.2.3. Prime Numbers

5.1.5.2.4. Properties of Composite and Prime Numbers

5.1.5.3. Twin Primes

5.1.5.4. Prime Triplet

5.1.6. Co-Primes

5.1.7. Perfect Numbers

5.2.1. Test Divisibility by 2

5.2.2. Test Divisibility by 10

5.2.3. Test Divisibility by 9

5.2.4. Test Divisibility by 8

5.2.5. Test Divisibility by 7

5.2.6. Test Divisibility by 6

5.2.7. Test Divisibility by 5

5.2.8. Test Divisibility by 4

5.2.9. Test Divisibility by 3

5.2.10. Test Divisibility by 11

5.4. HCF and LCM

5.4.1. HCF (Highest Common Factor)

5.4.2. LCM (Lowest Common Multiple)

5.4.3. Properties of LCM and HCF

5.4.4. Word problems on HCF and LCM

6. Fractions

6.2. Comparing Fractions

6.2.1. Comparing Like Fractions

6.2.3. Comparing Unlike Fractions

6.4. Equivalent Fractions

6.6. Unit Fraction

6.11. Operations on Fractions

6.11.1. Addition of Fractions

6.11.1.1. Addition of Like Fractions

6.11.1.2. Addition of Unlike Fractions

6.11.1.3. Addition of Mixed Fractions

6.11.1.4. Word Problems on Addition of Fractions

6.11.2. Subtraction of Fractions

6.11.2.1. Subtraction of Like Fractions

6.11.2.2. Subtraction of Unlike Fractions

6.11.2.3. Subtraction of Mixed Fractions

7. Decimals

7.4. Ordering Decimals

7.5. Comparing Decimals

7.6. Equivalent Decimals

7.9. Place Value Chart

7.10. Reading a Decimal Number

9.1. Ratio

9.1.1. Terms of a Ratio

9.1.2. Equivalent Ratio

9.1.3. Ratio in the Simplest Form

9.1.5. Comparison of Ratios

9.1.6. Word Problems on Ratio

10. Unitary Method

11.2. Variables and Constants

13. Mensuration

14. Geometry

14.2. Quadrilateral

14.2.1. Introduction to Quadrilaterals

14.2.5. Special Types of Quadrilateral

14.3. Polygon

14.3.1. Understanding Polygons

14.3.2. Name the Polygon

14.4. Curve

14.4.1. Straight and Curved Lines

14.4.2. Open Curve

14.4.3. Closed Curve

14.4.4. Simple Closed Curve

14.5. Triangles

14.5.1. Introduction to Triangles

14.5.2. Congruent Triangles

14.5.5. Types of Triangles by Angles

14.5.6. Count the Number of Triangles

14.5.7. Angle Sum Property of a Triangle

14.6. Angle

14.6.1. Introduction to Angles

14.6.4. Types of an Angles

14.8. Types of Lines

14.8.1. Parallel Lines

14.8.2. Perpendicular Lines

14.8.3. Intersecting Lines

14.8.4. Identifying the Type of Line

14.10. Circle

14.10.1. Interior and Exterior of a Circle

14.10.2. Terms related to a Circle

14.10.4. Concentric Circles

16. Linear Symmetry

17. Data Handling

17.3. Pictographs

17.4. Bar graphs

17.4.1. Drawing Bar Graphs

17.4.2. Interpreting Bar Graphs