Common Core: 1.OA — Operations & Algebraic Thinking
Grade 1 • subtraction • Medium
Subtraction Within 15 (Set E)
Master subtraction within 15
12 problems
1.
2
-1
_
2.
3
-1
_
3.
4
-0
_
4.
5
-5
_
5.
5
-4
_
6.
6
-3
_
7.
7
-2
_
8.
7
-1
_
9.
8
-0
_
10.
8
-7
_
11.
9
-6
_
12.
10
- 5
__