Free · Worked example · 64 problems · Answer key · US Letter
How to do it
Taking away 1 gives the number before. Count back.
9→8,7count back 2 Example problems
- 8−2=
- 6−1=
- 9−1=
- 7−1=
Subtraction facts within 20
- Subtracting 1 and 2
- Subtracting 3 and 4
- Subtracting from 10
- Subtraction facts within 10
- Teen numbers minus ones
- Subtracting 5, 6 and 7
- Subtracting 8 and 9
- Missing number addition and subtraction
- Mixed addition and subtraction to 20