MyMathKidK-8 Curriculum
Common Core: 1.OA
Answer Key
Grade 1 • addition • Medium

Sums to 20 (Set F)

Master sums to 20

12 problems

1.
2
+1
_
2.
3
+0
_
3.
3
+ 9
__
4.
3
+ 7
__
5.
4
+5
_
6.
4
+3
_
7.
5
+2
_
8.
5
+0
_
9.
6
+ 9
__
10.
6
+ 7
__
11.
7
+ 5
__
12.
7
+ 4
__
Math Worksheets for Kids • Worksheet #sums-to-20-f