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- Time
- Clock
- 24-Hour Clock Time
- Understanding 24-Hour Clock Time

3. Addition

4. Subtraction

7. Division

7.4. Long Division

8.1.1. Factors

8.1.1.1. Finding Factors of a Number

8.1.1.2. HCF (Highest Common Factor)

8.1.2. Multiples

8.1.2.1. Finding Multiples of a Number

8.1.2.2. LCM (Lowest Common Multiple)

8.2. Types of Numbers

8.2.1. Odd and Even Numbers

8.2.1.1. Even Numbers

8.2.1.2. Odd Numbers

8.2.2. Prime and Composite Numbers

8.4.1. Test Divisibility by 2

8.4.2. Test Divisibility by 3

8.4.3. Test Divisibility by 5

8.4.4. Test Divisibility by 6

8.4.5. Test Divisibility by 9

8.4.6. Test Divisibility by 10

9. Patterns

10. Rounding Numbers

10.1. Rounding Off Numbers

10.1.1. Rounding Off to the Nearest Ten

10.2. Estimating Sum

10.3. Estimating Difference

10.4. Estimating Products

11. Fractions

11.4. Division as Fraction

11.5. Fraction as Division

11.7. Equivalent Fractions

11.8. Comparison of Fractions

11.10. Unit Fraction

11.12.1. Addition of Like Fractions

11.12.2. Subtraction of Like Fractions

12. Decimals

12.1. Conversions

13. Money

14. Measurement

14.1. Measurement of Length

14.1.2.1. Addition of Lengths

14.1.2.1.1. Addition of Lengths in Meters and Centimeters

14.1.2.1.2. Addition of Lengths in Kilometers and Meters

14.1.2.2. Subtraction of Lengths

14.1.2.2.1. Subtraction of Lengths in Meters and Centimeters

14.1.2.2.2. Subtraction of Lengths in Kilometers and Meters

14.1.3. Word Problems on Length

14.1.3.1. Word Problems on Addition of Lengths

14.1.3.2. Word Problems on Subtraction of Lengths

14.2. Measurement of Weight

14.2.2.1. Addition of Weights

14.2.2.1.1. Addition of Weights in Grams and Milligrams

14.2.2.1.2. Addition of Weights in Kilograms and Grams

14.2.2.2. Subtraction of Weights

14.2.2.2.1. Subtraction of Weights in Grams and Milligrams

14.2.2.2.2. Subtraction of Weights in Kilograms and Grams

14.2.3. Word Problems on Weights

14.2.3.1. Word Problems on Addition of Weights

14.2.3.2. Word Problems on Subtraction of Weights

14.3. Measurement of Capacity

14.3.3. Word Problems on Capacity

14.3.3.1. Word Problems on Addition of Capacity

14.3.3.2. Word Problems on Subtraction of Capacity

15. Unitary Method

16. Geometry

16.2. Measure Line Segments

16.4. Types of Lines

16.4.1. Straight and Curved Lines

16.4.3. Open and Closed Shapes

16.5. Polygons

16.6. Circle

19. Symmetry

19.1. Introduction to Symmetry

19.3. Symmetry Around Us

19.5. Symmetry in Alphabets

19.6. Symmetry in Numerals

20. Time

20.1. Clock

20.1.2. Measuring Time

20.1.3. 24-Hour Clock Time

20.1.4. Use of 'AM' and 'PM'

20.1.5. Addition and Subtraction of Time

20.2. Calendar

21. Data Handling

21.1. Basic Definition of Data

21.2. Pictographs

21.3. Bar Graphs

21.3.1. Drawing Bar Graphs

21.3.2. Interpreting Bar Graphs

## Grade 4 USA School Math Understanding 24-Hour Clock Time

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