πagarwalmath · 1st grade · Common Core 1.OA.C.6
➖ Subtract within 20
Add and subtract within 20 (fluent within 10)
Name: ______________________Date: ____________
120 − 2 = ?
Answer: ______________
217 − 16 = ?
Answer: ______________
3Get to ten first: 12 − 8 = 12 − 2 − ?
Answer: ______________
4Get to ten first: 17 − 9 = 17 − 7 − ?
Answer: ______________
519 − 1 = ?
Answer: ______________
6Get to ten first: 17 − 8 = 17 − 7 − ?
Answer: ______________
719 − 18 = ?
Answer: ______________
818 − 1 = ?
Answer: ______________
9Get to ten first: 15 − 8 = 15 − 5 − ?
Answer: ______________
1018 − 2 = ?
Answer: ______________
11Get to ten first: 15 − 7 = 15 − 5 − ?
Answer: ______________
1211 − 11 = ?
Answer: ______________
Answer key: Subtract within 20
- 1. 18
- 2. 1
- 3. 6
- 4. 2
- 5. 18
- 6. 1
- 7. 1
- 8. 17
- 9. 3
- 10. 16
- 11. 2
- 12. 0
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/sub-within-20