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 solve a proportion?

Back

To solve a proportion, you can use cross multiplication.

Tags

CCSS.7.RP.A.2A

Front

What is cross multiplication?

Back

Cross multiplication involves multiplying the numerator of one ratio by the denominator of the other ratio.

Tags

CCSS.6.RP.A.3A

Front

If 25 liters of jam are made in 5 days, how much jam is made in 1 day?

Back

5 liters of jam.

Tags

CCSS.6.RP.A.3B

Front

If Sasha jars 25 liters of jam in 5 days, how much jam will she jar in 7 days?

Back

35 liters of jam.

Tags

CCSS.6.RP.A.3B

Front

What is the formula for finding the total number of words typed in a given time at a constant rate?

Back

Total words = (words per minute) x (total minutes).

Tags

CCSS.6.RP.A.3B

Front

If a person types 80 words per minute, how many words can they type in 30 minutes?

Back

2400 words.

Tags

CCSS.6.RP.A.3B

Front

What does it mean to solve for x in an equation?

Back

To solve for x means to find the value of x that makes the equation true.

Front

If x + 2 = 28, what is the value of x?

Back

x = 26.

Tags

CCSS.6.EE.B.7

Front

What is the relationship between ratios and proportions?

Back

Ratios are comparisons of two quantities, while proportions state that two ratios are equal.

Tags

CCSS.6.RP.A.3A