Write and solve a linear equation from a short verbal or contextual situation.
Write and solve an additive word-problem equation
Problem
Mia got \(7~\text{more}~\text{stickers}\) and then had \(18\). Write and solve an equation for her starting number of stickers.
Big Picture
What this problem is really about
This is a start-plus-change-equals-total story. Let the unknown represent Mia’s starting number, add the seven stickers she received, and set that sum equal to the final total of eighteen. Undo the increase to recover the starting amount, then add seven back as a check against the story.
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