6. Fractions
9. Decimals
10. Rounding Numbers
10.1. Rounding off the Numbers
10.1.1. Rounding Off to the Nearest Ten
10.1.5. Rounding Off to the Nearest Lakh
11. Measurement
12. Average
13. Percentage
14. Time
15. Money
16. Geometry
18. Perimeter
19. Area
20. Volume of Solids
21. Symmetry
22. Pattern