3.OA.A.3
Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.
Example Problems
Write an equation to describe this situation:
Larry read a 400-page book.
He read at a rate of 10 pages per day for days.
Larry read a 400-page book.
He read at a rate of 10 pages per day for days.
Write an equation to describe this situation:
Simone completed a 720-lap swimming challenge.
She swam 24 laps per day for days.
Simone completed a 720-lap swimming challenge.
She swam 24 laps per day for days.
Write an equation to describe this situation:
Mia completed a 500-piece puzzle.
She worked at a rate of 25 pieces per day for days.
Mia completed a 500-piece puzzle.
She worked at a rate of 25 pieces per day for days.
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