Add two 1-digit numbers (sum 20 or less)

Mental addition and number bonds

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Printed on the worksheet and the reward star. We never save it.

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Problems

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Hint

Regrouping

Regrouping means carrying (adding) or borrowing (subtracting) between places.

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Up to 64 fit on one page with these choices.

Worked example

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Include answer key

Reward star

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Every click makes a new set of problems.