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 − 7 = 12 − 2 − ?
Answer: ______________
212 − 10 = ?
Answer: ______________
320 − 5 = ?
Answer: ______________
4Near doubles: 4 + 4 = 8. So 4 + 3 = ?
Answer: ______________
511 − 7 = ?
Answer: ______________
6Get to ten first: 16 − 7 = 16 − 6 − ?
Answer: ______________
7Get to ten first: 13 − 9 = 13 − 3 − ?
Answer: ______________
819 − 18 = ?
Answer: ______________
9Make a ten: 6 + 9 = 6 + 4 + ?
Answer: ______________
1011 − 4 = ?
Answer: ______________
115 + 5 = ?
Answer: ______________
127 + 3 = ?
Answer: ______________
Answer key: Facts to 20
- 1. 5
- 2. 2
- 3. 15
- 4. 7
- 5. 4
- 6. 1
- 7. 6
- 8. 1
- 9. 5
- 10. 7
- 11. 10
- 12. 10
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/2nd-grade/add-facts-20