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Name Date
Add and Subtract Within 20: Set 1
Find each sum, difference, and missing number.
Add
Write each sum.
1.
7 + 1 =
2.
6 + 10 =
3.
10 + 3 =
4.
7 + 8 =
5.
5 + 10 =
Subtract
Write each difference.
6.
10 − 5 =
7.
4 − 2 =
8.
6 − 1 =
9.
11 − 1 =
10.
9 − 7 =
Missing numbers
Write the missing number.
11.
2 + = 3
12.
6 + = 14
13.
3 + = 10
14.
16 − = 14
15.
10 − = 3