Ratios, Rates and Unit Rates

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What is a ratio?

Back

A ratio is a comparison of two quantities, showing the relative size of one quantity to another.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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How do you calculate a unit rate?

Back

To calculate a unit rate, divide the quantity by the number of units. For example, if you have 60 miles in 2 hours, the unit rate is 60 miles / 2 hours = 30 miles per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two quantities with different units, such as miles per hour or cost per item.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the unit rate of 408 words in 4 minutes?

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The unit rate is 102 words per minute, calculated by dividing 408 words by 4 minutes.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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How do you determine the better buy between two products?

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To determine the better buy, calculate the unit price for each product and compare them. The product with the lower unit price is the better buy.

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CCSS.6.RP.A.3B

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If a 12 pack of juice boxes costs $6.59, what is the cost per juice box?

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The cost per juice box is $6.59 / 12 = $0.5492, or approximately $0.55.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the formula for calculating the price per item?

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The formula for calculating the price per item is: Price per item = Total price / Number of items.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What does it mean if a speed is given as 22 miles per hour?

Back

It means that for every hour, the object travels 22 miles, which is a unit rate.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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How can you express a ratio in simplest form?

Back

To express a ratio in simplest form, divide both quantities by their greatest common divisor.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first quantity is the numerator and the second quantity is the denominator.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2