πagarwalmath · 1st grade · Common Core 1.OA.C.6
➖ Subtract within 20
Add and subtract within 20 (fluent within 10)
Name: ______________________Date: ____________
1Get to ten first: 17 − 8 = 17 − 7 − ?
Answer: ______________
216 − 14 = ?
Answer: ______________
311 − 8 = ?
Answer: ______________
420 − 18 = ?
Answer: ______________
511 − 7 = ?
Answer: ______________
612 − 3 = ?
Answer: ______________
7Get to ten first: 15 − 9 = 15 − 5 − ?
Answer: ______________
8Get to ten first: 12 − 4 = 12 − 2 − ?
Answer: ______________
917 − 13 = ?
Answer: ______________
1014 − 9 = ?
Answer: ______________
1117 − 12 = ?
Answer: ______________
1215 − 14 = ?
Answer: ______________
Answer key: Subtract within 20
- 1. 1
- 2. 2
- 3. 3
- 4. 2
- 5. 4
- 6. 9
- 7. 4
- 8. 2
- 9. 4
- 10. 5
- 11. 5
- 12. 1
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/sub-within-20