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: ______________
27 − 7 = ?
Answer: ______________
312 − 8 = ?
Answer: ______________
410 − 9 = ?
Answer: ______________
5Start at 15 and count back 2. Where do you land? (15 − 2)
Answer: ______________
67 − 6 = ?
Answer: ______________
718 − 5 = ?
Answer: ______________
8Start at 9 and count back 2. Where do you land? (9 − 2)
Answer: ______________
911 − 4 = ?
Answer: ______________
109 − 6 = ?
Answer: ______________
1120 − 1 = ?
Answer: ______________
1211 − 7 = ?
Answer: ______________
Answer key: Subtract within 20
- 1. 15
- 2. 0
- 3. 4
- 4. 1
- 5. 13
- 6. 1
- 7. 13
- 8. 7
- 9. 7
- 10. 3
- 11. 19
- 12. 4
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/sub-within-20