πagarwalmath · 1st grade · Common Core 1.OA.C.6
➖ Subtract within 20
Add and subtract within 20 (fluent within 10)
Name: ______________________Date: ____________
1Start at 8 and count back 3. Where do you land? (8 − 3)
Answer: ______________
220 − 5 = ?
Answer: ______________
312 − 6 = ?
Answer: ______________
412 − 4 = ?
Answer: ______________
519 − 7 = ?
Answer: ______________
620 − 3 = ?
Answer: ______________
79 − 5 = ?
Answer: ______________
8Start at 10 and count back 3. Where do you land? (10 − 3)
Answer: ______________
9Start at 14 and count back 3. Where do you land? (14 − 3)
Answer: ______________
10Start at 17 and count back 2. Where do you land? (17 − 2)
Answer: ______________
11Start at 13 and count back 2. Where do you land? (13 − 2)
Answer: ______________
1220 − 1 = ?
Answer: ______________
Answer key: Subtract within 20
- 1. 5
- 2. 15
- 3. 6
- 4. 8
- 5. 12
- 6. 17
- 7. 4
- 8. 7
- 9. 11
- 10. 15
- 11. 11
- 12. 19
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/sub-within-20