Common Core: 1.OA — Operations & Algebraic Thinking
Grade 1 • subtraction • Medium
Subtraction Within 20 (Set F)
Master subtraction within 20
12 problems
1.
3
-0
_
2.
4
-4
_
3.
4
-3
_
4.
5
-3
_
5.
6
-3
_
6.
7
-2
_
7.
8
-0
_
8.
8
-8
_
9.
9
-7
_
10.
10
- 6
__
11.
11
- 5
__
12.
12
- 3
__