3. Addition
4. Subtraction
7. Division
10. Patterns
11. Rounding Numbers
12. Fractions
13. Decimals
14. Money
15. Measurement
15.1. Measurement of Length
15.1.2.1. Addition of Lengths
15.1.2.1.1. Addition of Lengths in Meters and Centimeters
15.1.2.1.2. Addition of Lengths in Kilometers and Meters
15.1.2.2. Subtraction of Lengths
15.1.3. Word Problems on Length
15.2. Measurement of Weight
15.3. Measurement of Capacity
16. Unitary Method
17. Geometry
20. Symmetry
21. Time
22. Data Handling