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Common Core State Standard

K.OA.A.4

For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation.

CCSS: K.OA.A.4
Get rid of the number bubbles by forming pairs that add up to 10.  Get them all before they go down the drain!