In this video, Mr. J explains the concept of unit rates, which are ratios with a denominator of one. He demonstrates how to calculate unit rates through three examples: miles per hour, apartments per floor, and laps per day. By setting up ratios as fractions and adjusting the denominator to one, viewers learn how to determine the unit rate for various scenarios.

What is a unit rate?

• A formula to find the product of two quantities.

• A type of mathematical operation involving division only.

• A method to calculate the sum of two numbers.

• A ratio between two different units with a denominator of one.

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How do you calculate the unit rate for miles per hour if given 30 miles in 2 hours?

• Subtract 2 from 30.

• Add 30 and 2 together.

• Multiply 30 by 2.

• Divide 30 by 2.

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What operation is performed to both the numerator and the denominator to find a unit rate?

• Multiplication

• Subtraction

• Addition

• Division

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What does a denominator of one signify in the context of unit rates?

• It represents one unit for the rate calculation.

• It suggests that no calculation is needed.

• It indicates the total units.

• It is used for multiplication purposes.

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If you have 30 miles in 2 hours, what does dividing both terms by 2 achieve?

• It simplifies the fraction.

• It changes the units of measure.

• It increases the rate.

• It decreases the total distance.

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Why is it important to have a denominator of one when calculating unit rates?

• To make it easier to multiply.

• To represent the rate per one unit.

• To ensure accuracy in measurement.

• To simplify the calculation.

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What is the unit rate of 40 apartments on 5 floors?

• 8 apartments per floor.

• 10 apartments per floor.

• 5 apartments per floor.

• 20 apartments per floor.

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In the context of the video, what is the unit rate of 40 apartments on 5 floors?

• 200 apartments per floor.

• 8 apartments per floor.

• 5 apartments per floor.

• None of the above.

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How many laps per day can be completed if 16 laps are done in 4 days?

• 12 laps per day.

• 8 laps per day.

• 16 laps per day.

• 4 laps per day.

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What is the result of dividing 16 laps by 4 days to find the unit rate?

• 12 laps per day.

• 8 laps per day.

• 4 laps per day.

• 16 laps per day.

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