Key Idea1 of 3
The Thirties
After 30, we count 31, 32, 33, 34, 35, 36, 37, 38, 39, 40. See the pattern? The ones digit goes 1, 2, 3, 4, 5, 6, 7, 8, 9, then we jump to the next ten!
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Math — Counting to 50
After 30, we count 31, 32, 33, 34, 35, 36, 37, 38, 39, 40. See the pattern? The ones digit goes 1, 2, 3, 4, 5, 6, 7, 8, 9, then we jump to the next ten!