πagarwalmath · 1st grade · Common Core 1.OA.C.6
➖ Subtract within 20
Add and subtract within 20 (fluent within 10)
Name: ______________________Date: ____________
115 − 13 = ?
Answer: ______________
220 − 15 = ?
Answer: ______________
3Get to ten first: 17 − 8 = 17 − 7 − ?
Answer: ______________
4Get to ten first: 12 − 9 = 12 − 2 − ?
Answer: ______________
5Get to ten first: 13 − 5 = 13 − 3 − ?
Answer: ______________
617 − 13 = ?
Answer: ______________
7Get to ten first: 17 − 9 = 17 − 7 − ?
Answer: ______________
817 − 11 = ?
Answer: ______________
911 − 4 = ?
Answer: ______________
1013 − 2 = ?
Answer: ______________
1112 − 12 = ?
Answer: ______________
12Get to ten first: 14 − 5 = 14 − 4 − ?
Answer: ______________
Answer key: Subtract within 20
- 1. 2
- 2. 5
- 3. 1
- 4. 7
- 5. 2
- 6. 4
- 7. 2
- 8. 6
- 9. 7
- 10. 11
- 11. 0
- 12. 1
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/sub-within-20