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