πagarwalmath · 1st grade · Common Core 1.OA.C.6
➖ Subtract within 20
Add and subtract within 20 (fluent within 10)
Name: ______________________Date: ____________
120 − 18 = ?
Answer: ______________
213 − 12 = ?
Answer: ______________
312 − 6 = ?
Answer: ______________
417 − 13 = ?
Answer: ______________
5Get to ten first: 14 − 5 = 14 − 4 − ?
Answer: ______________
617 − 10 = ?
Answer: ______________
714 − 13 = ?
Answer: ______________
8Get to ten first: 15 − 7 = 15 − 5 − ?
Answer: ______________
9Get to ten first: 14 − 6 = 14 − 4 − ?
Answer: ______________
1014 − 10 = ?
Answer: ______________
1117 − 16 = ?
Answer: ______________
1217 − 14 = ?
Answer: ______________
Answer key: Subtract within 20
- 1. 2
- 2. 1
- 3. 6
- 4. 4
- 5. 1
- 6. 7
- 7. 1
- 8. 2
- 9. 2
- 10. 4
- 11. 1
- 12. 3
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/sub-within-20