Addition
10 + 5
15
16 - 8
8
2 + 2 + 2
6
Start at 10 go to 20
10 11 12 13 14 15 16 17 18 19 20
11 + 9
20
13
3 + 3 + 3
9
30 to 40
31 32 33 34 35 36 37 38 39 40
7 + 13
20
15 - 5
10
4 + 4 + 4
12
45 to 55
45 46 47 48 49 50 51 52 53 54 55
9 + 9
18
19 - 9
10
5 + 5 + 5
15
65 to 72
65 66 67 68 69 70 71 72
30 + 5
35
40-10
30
10 + 10 + 10
30
50 to 70
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70