skip counting by 5
20, 25, 30, ?
35
30, 40, 50, ?
60
100, 200, ?
300
4 + 4 =
8
3 + 2 =
5
50, 55, 60, ?
65
45, 55, 65, ?
75
501, 601, ?
701
5 + 5 =
10
6 + 4 =
10
80, 85, 90, ?
95
23, 33, 43, ?
53
250, 350, ?
450
7 + 7 =
14
10 - 5 =
5
140, 145, 150, ?
155
151, 161, 171, ?
181
152, 252, ?
352
8 + 8 =
16
7 + 5 =
12
155, 150, 145, ?
140
80, 90, 100,?
110
900, 800, 700, ?
600
10 + 10 =
20
9 - 7 =
2