Proportions

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Tags

CCSS.7.RP.A.2A

Front

How do you set up a proportion to solve a problem?

Back

To set up a proportion, you can use the formula a/b = c/d, where a and b are the first ratio, and c and d are the second ratio.

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CCSS.7.RP.A.2C

Front

What is the cross-multiplication method in solving proportions?

Back

The cross-multiplication method involves multiplying the numerator of one ratio by the denominator of the other ratio, and setting the two products equal to each other.

Front

If 3 pounds of meat cost $6, what is the cost per pound?

Back

The cost per pound is $2, calculated by dividing $6 by 3.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you find an unknown in a proportion?

Back

You can find an unknown in a proportion by cross-multiplying and then solving for the unknown variable.

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CCSS.7.RP.A.2B

Front

What is the relationship between ratios and proportions?

Back

Ratios are comparisons of two quantities, while proportions show that two ratios are equivalent.

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CCSS.6.RP.A.3A

Front

How can proportions be used in real-life situations?

Back

Proportions can be used in various real-life situations, such as cooking, budgeting, and scaling recipes.

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CCSS.7.RP.A.3

Front

If 5 ice cream cones are sold for every 3 brownies, how would you express this as a ratio?

Back

The ratio of ice cream cones to brownies is 5:3.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the formula to find the total cost when given a unit price and quantity?

Back

Total cost = unit price × quantity.

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CCSS.6.RP.A.3B

Front

How do you convert a ratio to a fraction?

Back

To convert a ratio to a fraction, simply write the first quantity as the numerator and the second quantity as the denominator.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2