Video: Count Forward by Tens from a Given Number within the Known Sequence

Which number is missing? 50, 60, 70, 80, ＿.

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Video Transcript

Which number is missing? 50, 60, 70, 80, the missing number.

We can skip-count in tens to help us find the answer. 50, 60, 70, 80, 90. The missing number is 90.

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