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?
To run errands, Omar drives and then walks .

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?
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