In this subtraction instructional activity, learners use the given numbers to complete and solve the horizontal subtraction equations. Students solve 20 problems.

In this missing addend worksheet, students fill in missing addends to arrive at given sums. All numbers are 2-digit. A reference website is given for additional activities.

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In this place-value instructional activity, students add whole numbers to numbers that have decimals in the tenths place. Students complete 40 problems—half of these problems, they fill in missing addends.

In this addition activity, students complete 24 problems, filling in missing numbers, either addends or sums. A reference website is provided for additional activities.

The purpose of this task is for students to practice creating and memorizing subtraction equations while focusing on missing addends. After modeling the activity with the whole class, this game would be perfect for centers and small groups.