Common Core: 1.OA
Answer Key
Grade 1additionChallenging

Mixed Addition Practice (Set E)

Challenge yourself with all facts

12 problems

1.
0
+18
__
2.
4
+16
__
3.
5
+12
__
4.
6
+ 9
__
5.
7
+ 5
__
6.
8
+ 2
__
7.
15
+ 1
__
8.
2
+17
__
9.
6
+1
_
10.
11
+ 9
__
11.
12
+ 6
__
12.
13
+ 2
__