πagarwalmath · 1st grade · Common Core 1.OA.C.6
➖ Subtract within 20
Add and subtract within 20 (fluent within 10)
Name: ______________________Date: ____________
1Get to ten first: 17 − 8 = 17 − 7 − ?
Answer: ______________
2Get to ten first: 14 − 7 = 14 − 4 − ?
Answer: ______________
3Get to ten first: 16 − 8 = 16 − 6 − ?
Answer: ______________
4Get to ten first: 13 − 8 = 13 − 3 − ?
Answer: ______________
514 − 5 = ?
Answer: ______________
617 − 6 = ?
Answer: ______________
713 − 7 = ?
Answer: ______________
8Get to ten first: 17 − 9 = 17 − 7 − ?
Answer: ______________
9Get to ten first: 11 − 7 = 11 − 1 − ?
Answer: ______________
1015 − 9 = ?
Answer: ______________
11Get to ten first: 15 − 7 = 15 − 5 − ?
Answer: ______________
1220 − 15 = ?
Answer: ______________
Answer key: Subtract within 20
- 1. 1
- 2. 3
- 3. 2
- 4. 5
- 5. 9
- 6. 11
- 7. 6
- 8. 2
- 9. 6
- 10. 6
- 11. 2
- 12. 5
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/sub-within-20