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: 14 − 7 = 14 − 4 − ?
Answer: ______________
220 − 17 = ?
Answer: ______________
38 + 5 = ?
Answer: ______________
420 − 4 = ?
Answer: ______________
517 − 10 = ?
Answer: ______________
6Near doubles: 3 + 3 = 6. So 3 + 2 = ?
Answer: ______________
719 − 8 = ?
Answer: ______________
8Make a ten: 6 + 6 = 6 + 4 + ?
Answer: ______________
9Near doubles: 9 + 9 = 18. So 9 + 10 = ?
Answer: ______________
1012 − 5 = ?
Answer: ______________
1117 − 5 = ?
Answer: ______________
12Get to ten first: 13 − 8 = 13 − 3 − ?
Answer: ______________
Answer key: Facts to 20
- 1. 3
- 2. 3
- 3. 13
- 4. 16
- 5. 7
- 6. 5
- 7. 11
- 8. 2
- 9. 19
- 10. 7
- 11. 12
- 12. 5
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/2nd-grade/add-facts-20