Adding and Subtracting Numbers up to 20 - Problems with Solutions

Problems involving adding and subtracting numbers up to 20 for first grade.
Problem 1
7 + 2 =
Problem 2
10 + 2 =
Problem 3
14 - 3 =
Problem 4
20 - 9 =
Problem 5
15 - 5 =
Problem 6
1 + 18 =
Problem 7
15 + 3 =
Problem 8
12 + 7 =
Problem 9
10 - 8 =
Problem 10
20 - 11 =

Problem 11
+ 4 = 9
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