πagarwalmath · 2nd grade · Common Core 2.OA.B.2
⚡ Facts to 20
Add and subtract within 20 from memory
Name: ______________________Date: ____________
1Get to ten first: 12 − 9 = 12 − 2 − ?
Answer: ______________
2Make a ten: 6 + 7 = 6 + 4 + ?
Answer: ______________
3Near doubles: 4 + 4 = 8. So 4 + 3 = ?
Answer: ______________
420 − 11 = ?
Answer: ______________
5Near doubles: 3 + 3 = 6. So 3 + 4 = ?
Answer: ______________
6Make a ten: 9 + 9 = 9 + 1 + ?
Answer: ______________
7Get to ten first: 17 − 9 = 17 − 7 − ?
Answer: ______________
8Get to ten first: 13 − 7 = 13 − 3 − ?
Answer: ______________
96 + 8 = ?
Answer: ______________
1010 + 10 = ?
Answer: ______________
11Get to ten first: 15 − 9 = 15 − 5 − ?
Answer: ______________
128 + 7 = ?
Answer: ______________
Answer key: Facts to 20
- 1. 7
- 2. 3
- 3. 7
- 4. 9
- 5. 7
- 6. 8
- 7. 2
- 8. 4
- 9. 14
- 10. 20
- 11. 4
- 12. 15
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/2nd-grade/add-facts-20