Add and Subtract Within 20: Set 10
0 / 15Find each sum, difference, and missing number.

Write each sum.
6 + 10 =
7 + 9 =
5 + 5 =
3 + 1 =
1 + 10 =
Write each difference.
19 − 2 =
9 − 4 =
10 − 9 =
7 − 5 =
9 − 6 =
Write the missing number.
11 − = 8
4 + = 10
6 + = 7
3 + = 5
2 + = 10