1 Digit Addition
4 + 5
9
11 + 3
14
Say another way to make 12. No zeros or ones.
6 + 6
7 + 5
8 + 4
9 + 3
10 + 2
6 + 6
12
5 + 6
11
6 + 3
9
26 + 4
30
Say another way to make 9. No zeros or ones.
5 + 4
6 + 3
7 + 2
7 + 7
14
7 + 8
15
7 + 4
11
32 + 8
40
Say another way to make 15. No zeros or ones.
8 + 7
9 + 6
10 + 5
11 + 4
12 + 3
13 + 2
8 + 8
16
8 + 9
17
8 + 9
17
9 + 14
23
Say another way to make 18. No zeros or ones.
9 + =
10 + 8
11 + 7
12 + 6
13 + 5
14 + 4
15 + 3
16 + 2
9 + 9
18
10 + 11
21
5 + 7 + 10
22
8 + 36
44
If you can use a doubles fact to answer an addition problem, what can you do to find another way to make the same number?
Add 1 to one side and subtract 1 from the other side.
12 + 12
24
11 + 12
23