3. Estimation
6. Integers
7. Fractions
7.1. Revisiting Basics
7.2. Equivalent Fractions
7.3. Comparing Fractions
7.3.1. Comparing Like Fractions
7.3.2. Comparing Unlike Fractions
9. Decimals
11. Unitary Method
12. Percentage
13. Profit and Loss
14. Simple Interest
15. Exponents
18. Mensuration
19. Geometry
22. Probability
23. Data Handling
Mexico