πagarwalmath · 2nd grade · Common Core 2.OA.B.2
⚡ Facts to 20
Add and subtract within 20 from memory
Name: ______________________Date: ____________
18 + 5 = ?
Answer: ______________
25 + 7 = ?
Answer: ______________
320 − 15 = ?
Answer: ______________
4Get to ten first: 15 − 6 = 15 − 5 − ?
Answer: ______________
5Get to ten first: 16 − 9 = 16 − 6 − ?
Answer: ______________
6Get to ten first: 17 − 8 = 17 − 7 − ?
Answer: ______________
7Get to ten first: 13 − 5 = 13 − 3 − ?
Answer: ______________
817 − 15 = ?
Answer: ______________
9Near doubles: 9 + 9 = 18. So 9 + 8 = ?
Answer: ______________
1010 + 9 = ?
Answer: ______________
1114 − 12 = ?
Answer: ______________
1213 − 11 = ?
Answer: ______________
Answer key: Facts to 20
- 1. 13
- 2. 12
- 3. 5
- 4. 1
- 5. 3
- 6. 1
- 7. 2
- 8. 2
- 9. 17
- 10. 19
- 11. 2
- 12. 2
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/2nd-grade/add-facts-20