Common Core: 1.OA
Answer Key
Grade 1additionChallenging

Mixed Addition Practice (Set F)

Master all addition facts

12 problems

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