. Grade K, Illustrative icon
Task

What's Missing?

Illustrative MathematicsVaries

Repeat the task 4-5 times per student. This task may be repeated with a different number of counters. Students should eventually be able to recognize the number of counters that are showing and/or hidden without counting. The words compose and decompose are used to describe actions that young students learn as they acquire knowledge of small numbers by putting them together and taking them apart.

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