πagarwalmath · 1st grade · Common Core 1.OA.C.6
➖ Subtract within 20
Add and subtract within 20 (fluent within 10)
Name: ______________________Date: ____________
115 − 15 = ?
Answer: ______________
217 − 16 = ?
Answer: ______________
3Get to ten first: 15 − 7 = 15 − 5 − ?
Answer: ______________
4Get to ten first: 14 − 5 = 14 − 4 − ?
Answer: ______________
520 − 20 = ?
Answer: ______________
615 − 2 = ?
Answer: ______________
7Get to ten first: 14 − 8 = 14 − 4 − ?
Answer: ______________
8Get to ten first: 16 − 7 = 16 − 6 − ?
Answer: ______________
920 − 19 = ?
Answer: ______________
1018 − 2 = ?
Answer: ______________
1111 − 4 = ?
Answer: ______________
12Get to ten first: 15 − 6 = 15 − 5 − ?
Answer: ______________
Answer key: Subtract within 20
- 1. 0
- 2. 1
- 3. 2
- 4. 1
- 5. 0
- 6. 13
- 7. 4
- 8. 1
- 9. 1
- 10. 16
- 11. 7
- 12. 1
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/sub-within-20