Common Core: 1.OA
Answer Key
Grade 1additionMedium

Sums to 15 (Set B)

More practice with sums to 15

12 problems

1.
1
+2
_
2.
1
+0
_
3.
1
+10
__
4.
2
+ 8
__
5.
2
+6
_
6.
3
+4
_
7.
3
+2
_
8.
4
+1
_
9.
4
+10
__
10.
5
+ 8
__
11.
5
+ 6
__
12.
5
+4
_