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

Bonds of 20 (Set D)

Keep practicing bonds of 20

10 problems

1.
?155
ans
15 + 5 = ?
2.
2015?
ans
15 + ? = 20
3.
2016?
ans
16 + ? = 20
4.
20?3
ans
? + 3 = 20
5.
20?2
ans
? + 2 = 20
6.
?182
ans
18 + 2 = ?
7.
?191
ans
19 + 1 = ?
8.
201?
ans
1 + ? = 20
9.
202?
ans
2 + ? = 20
10.
20?18
ans
? + 18 = 20
Math Worksheets for Kids • Worksheet #bonds-of-20-d