4.MD.2
Use the four operations to solve word problems involving: intervals of time, money, distances, liquid volumes, masses of objects, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. Represent measurement quantities using diagrams such as number line diagrams that feature a measurement scale.
Example Problems
Ava spends practicing piano and doing scales.
How long does Ava practice in total?
How long does Ava practice in total?
To run errands, Omar drives and then walks .
How many kilometers does Omar travel in total?
How many kilometers does Omar travel in total?
Ethan hikes 2.95 kilometers before lunch and 4.068 kilometers after lunch.
How many kilometers does Ethan hike in total?
How many kilometers does Ethan hike in total?
Khan Academy ResourcesMetric conversions word problemsTelling time word problemsTime differencesConvert money word problemsUS customary conversion word problemsTime conversion word problemsTime word problem: Susan's breakMulti-step unit conversion examples (U.S. Customary)Time word problem: puzzleMulti-step unit conversion examples (metric)Currency conversion word problemTime word problem: travel timeTime differences exampleWord problem: making change

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