Ratios, Rates, Complex Fractions

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What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common factor (GCF).

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the ratio of 45 boys to 30 girls in simplest form?

Back

3:2

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a rate?

Back

A rate is a ratio that compares two quantities with different units.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

Calculate the miles per gallon if a car drives 256 miles using 8 gallons of gas.

Back

32 miles per gallon.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a complex fraction?

Back

A complex fraction is a fraction where the numerator, the denominator, or both contain fractions.

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Which of the following is NOT a complex fraction? 1/2, 3/(4/5), 5/(2+3), 7/x

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7/x (it has a variable, not a fraction in the numerator or denominator).

Front

Write the ratio of cats to dogs if there are 24 dogs and 18 cats.

Back

3:4

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the formula to find a unit rate?

Back

To find a unit rate, divide the quantity by the number of units.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

2:3

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CCSS.6.RP.A.1

CCSS.6.RP.A.2