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: 12 − 5 = 12 − 2 − ?
Answer: ______________
2Get to ten first: 17 − 9 = 17 − 7 − ?
Answer: ______________
3Get to ten first: 13 − 7 = 13 − 3 − ?
Answer: ______________
420 − 7 = ?
Answer: ______________
5Get to ten first: 15 − 8 = 15 − 5 − ?
Answer: ______________
620 − 15 = ?
Answer: ______________
715 − 4 = ?
Answer: ______________
815 − 6 = ?
Answer: ______________
913 − 9 = ?
Answer: ______________
10Get to ten first: 14 − 7 = 14 − 4 − ?
Answer: ______________
1116 − 4 = ?
Answer: ______________
1211 − 9 = ?
Answer: ______________
Answer key: Subtract within 20
- 1. 3
- 2. 2
- 3. 4
- 4. 13
- 5. 3
- 6. 5
- 7. 11
- 8. 9
- 9. 4
- 10. 3
- 11. 12
- 12. 2
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/sub-within-20