Facts Within 20: Set 1
0 / 16Facts Within 20: Set 1
Add and subtract from memory.
Add
Write each sum.
1.
7 + 2 =
2.
6 + 10 =
3.
10 + 4 =
4.
7 + 8 =
5.
5 + 10 =
6.
6 + 6 =
Subtract
Write each difference.
7.
12 − 5 =
8.
13 − 3 =
9.
15 − 2 =
10.
14 − 8 =
11.
11 − 5 =
12.
16 − 8 =
Missing numbers
Write the missing number.
13.
3 + = 10
14.
18 − = 15
15.
15 − = 7
16.
13 − = 5