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Solving for value in box with addition

Solve for value in box with addition

This math skill teaches how to solve for an unknown value in a box within an addition equation. It involves isolating the box by subtracting the same number from both sides of the equation, thus allowing for the solution of the unknown value.

Learn solving for value in box with addition

Teaching Transcript

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What number can we put in the circle to solve this equation?

Let's get the circle by itself by subtracting 7 from both sides

Now the 7's cancel out

And we can solve for the box by subtracting 7 from 15

Skill Practice

Solve for value in box with addition

Test your understanding of solving for value in box with addition by practicing it! Work through the below exercises to use it in practice.