Add a 2-digit and 1-digit number in columns (missing addend)

Adding in columns (no regrouping)

Student name (optional)

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

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Problems

Regrouping (carrying)

Regrouping means carrying from one column into the next, like ones into tens.

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Sheet

Number of problems

Up to 25 fit on one page with these choices.

Worked example

Pictures

Game

Include answer key

Reward star

Paper:

Every click makes a new set of problems.