20 - 10, ____, 30, 40, 50, 60 - 30, 40, 50, ____, 70, 80, 100 - 70, 80, 90, ___, 10 - 0, ___, 20, 30, 80 - 60, 70, ____, 90, 100, 40 - 20, 30, ____, 50, 60, 70, 30 - 0, 10, 20, ____, 40, 50, 50 - 20, 30, 40, ____, 60, 70, 70 - 40, 50, 60 ___, 80, 90 - 60, 70, 80, ____, 100,

Counting by 10s

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