Add and Subtract Within 20: Set 9
0 / 15Add and Subtract Within 20: Set 9
Find each sum, difference, and missing number.
Add
Write each sum.
1.
2 + 9 =
2.
8 + 7 =
3.
3 + 10 =
4.
2 + 7 =
5.
7 + 6 =
Subtract
Write each difference.
6.
7 − 6 =
7.
7 − 5 =
8.
14 − 4 =
9.
12 − 9 =
10.
18 − 5 =
Missing numbers
Write the missing number.
11.
5 − = 2
12.
1 + = 10
13.
6 + = 11
14.
9 + = 17
15.
1 + = 6