Counting by 2
2, 4, 6, ___
8
5, 10, ____
15
2+3=
5
5-3=
2
2, 4, 6, 8, 10
Count by 2s or +2
22, 24, 26, 28, ____
30
25, 30, ___
35
3+7=
10
10-5=
5
5, 10, 15, 20
Count by 5s or +5
50, ____
52
50, ____
55
10+ 5=
15
10-8=
2
1, 3, 5, 7, 9
+2
78, ____
80
75, ____
80
8+3=
11
20-10=
10
50, 40, 30, 20
-10
236, _____
238
200, ____
205
11+ 5=
16
50-20=
30
80, 60, 40, 20
-20