πagarwalmath · 1st grade · Common Core 1.OA.C.6
➖ Subtract within 20
Add and subtract within 20 (fluent within 10)
Name: ______________________Date: ____________
1Start at 18 and count back 3. Where do you land? (18 − 3)
Answer: ______________
29 − 8 = ?
Answer: ______________
314 − 4 = ?
Answer: ______________
419 − 6 = ?
Answer: ______________
517 − 3 = ?
Answer: ______________
610 − 8 = ?
Answer: ______________
714 − 7 = ?
Answer: ______________
817 − 9 = ?
Answer: ______________
911 − 1 = ?
Answer: ______________
1019 − 2 = ?
Answer: ______________
116 − 5 = ?
Answer: ______________
1213 − 1 = ?
Answer: ______________
Answer key: Subtract within 20
- 1. 15
- 2. 1
- 3. 10
- 4. 13
- 5. 14
- 6. 2
- 7. 7
- 8. 8
- 9. 10
- 10. 17
- 11. 1
- 12. 12
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/sub-within-20