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: ______________
214 − 4 = ?
Answer: ______________
315 − 7 = ?
Answer: ______________
416 − 16 = ?
Answer: ______________
5Get to ten first: 17 − 9 = 17 − 7 − ?
Answer: ______________
618 − 9 = ?
Answer: ______________
715 − 3 = ?
Answer: ______________
8Get to ten first: 16 − 7 = 16 − 6 − ?
Answer: ______________
912 − 8 = ?
Answer: ______________
10Get to ten first: 14 − 9 = 14 − 4 − ?
Answer: ______________
11Get to ten first: 13 − 4 = 13 − 3 − ?
Answer: ______________
1215 − 1 = ?
Answer: ______________
Answer key: Subtract within 20
- 1. 1
- 2. 10
- 3. 8
- 4. 0
- 5. 2
- 6. 9
- 7. 12
- 8. 1
- 9. 4
- 10. 5
- 11. 1
- 12. 14
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/sub-within-20