Review Ratios

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a:b'.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you find the ratio of a part to the whole?

Back

To find the ratio of a part to the whole, divide the part by the total and express it in simplest form.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is an equivalent ratio?

Back

Equivalent ratios are two or more ratios that represent the same relationship between numbers.

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CCSS.6.RP.A.3A

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms of the ratio by their greatest common divisor (GCD).

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If there are 14 cakes, 12 donuts, and 4 cupcakes, what is the total number of items?

Back

The total number of items is 14 + 12 + 4 = 30.

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CCSS.2.OA.A.1

Front

What is the ratio of donuts to total items if there are 12 donuts and 30 total items?

Back

The ratio of donuts to total items is 12:30, which simplifies to 2:5.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you calculate the cost per item?

Back

To calculate the cost per item, divide the total cost by the number of items.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If Mikey spent $3.75 for 3 pounds of granola, what is the cost per pound?

Back

The cost per pound is $3.75 ÷ 3 = $1.25.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the formula to find words typed per minute?

Back

The formula is: Words per minute = Total words ÷ Total minutes.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If Noel can type 408 words in 4 minutes, how many words can he type per minute?

Back

Noel can type 408 ÷ 4 = 102 words per minute.

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CCSS.3.OA.A.3