7th Unit 1 Check for Understanding

There are _____ centimeters in one meter.

There are _____ meters in one kilometer.

There are _____ inches in one foot.

There are _____ feet in one yard.

There are 12 inches in 1 foot and 5,280 feet in 1 mile. Elena ran 2 1/2 miles. How many feet is that? _____

There are 12 inches in 1 foot and 5,280 feet in 1 mile. Elena ran 2 1/2 miles. How many inches is that? _____

Elena drank 3 liters of water yesterday. Jada drank _____ times as much water as Elena. Lin drank twice as much water as Jada. Did Jada drink more or less water than Elena? Explain how you know.

Elena drank 3 liters of water yesterday. Jada drank 3/4 times as much water as Elena. Lin drank twice as much water as Jada. Lin drank _____ liters of water.

Each small square in the graph paper represents 1 square unit. Find the area of each figure. Explain your reasoning.

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This rectangle has side lengths r and s. For each expression, say whether it gives the perimeter of the rectangle, the area of the rectangle, or neither.

• r + s

• r · s

• 2r + 2s

• r² + s²