Count by 1's
Finish the pattern.
1, 2, 3, ____, ____
4, 5
15, 16, 17, 18, _____, ______
19, 20
Finish the pattern.
28, 29, 30, ____, ____, 33
31, 32
Finish the pattern 60, 70, 80, ___, ____
90, 100
200, 201
Finish the pattern ___, ____, 35, 45, 55
15, 25
_____, _____, 101, 102, 103
99, 100
Finish the pattern.
____, ___, 500, 600, 700