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.
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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.
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What number can we put in the circle to solve this equation?
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Let's get the circle by itself by subtracting 7 from both sides
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Now the 7's cancel out
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And we can solve for the box by subtracting 7 from 15