Know that 10, 20, 30 and so on up to 90 mean 1 to 9 tens with no ones.
Standards are described in our own words. Read the official Common Core document.
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Tell us what would help your class practice it.
Each worksheet is matched to the skills it practices, and this standard to the skills it asks for. Everything here shares at least one of them. All of it is free to print and use.
