πagarwalmath · 1st grade · Common Core 1.OA.C.6
➖ Subtract within 20
Add and subtract within 20 (fluent within 10)
Name: ______________________Date: ____________
1Start at 18 and count back 2. Where do you land? (18 − 2)
Answer: ______________
2Start at 15 and count back 2. Where do you land? (15 − 2)
Answer: ______________
3Start at 9 and count back 3. Where do you land? (9 − 3)
Answer: ______________
413 − 3 = ?
Answer: ______________
59 − 6 = ?
Answer: ______________
67 − 2 = ?
Answer: ______________
716 − 4 = ?
Answer: ______________
8Start at 14 and count back 3. Where do you land? (14 − 3)
Answer: ______________
919 − 9 = ?
Answer: ______________
10Start at 18 and count back 3. Where do you land? (18 − 3)
Answer: ______________
1120 − 9 = ?
Answer: ______________
12Start at 10 and count back 3. Where do you land? (10 − 3)
Answer: ______________
Answer key: Subtract within 20
- 1. 16
- 2. 13
- 3. 6
- 4. 10
- 5. 3
- 6. 5
- 7. 12
- 8. 11
- 9. 10
- 10. 15
- 11. 11
- 12. 7
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/sub-within-20