## Grade 1 USA School Math Subtraction From 20

*Subtraction Skill Builder*

Master this topic as part of *Subtraction Skill Builder*

8.3. Subtract and Compare

8.4.1. Subtracting 1

8.4.2. Subtraction From 10

8.4.3. Subtracting 9

8.4.4. Subtracting 8

8.4.5. Subtracting 7

8.4.6. Subtracting 6

8.4.7. Subtracting 5

8.4.8. Subtracting 4

8.4.9. Subtracting 3

8.4.10. Subtracting 2

8.4.11. Subtraction From 20

8.5. Subtraction of Zero

11. Multiplication

12. Skip Counting

14. Time

15. Probability

16. Data Handling