Proportions and Ratios Quiz (Tori)

Which description best fits the definition of a "proportion"?

• The process of solving an equation.

• The name given to two equivalent ratios.

• The name for fractions and their reciprocals.

• The process of combining like terms.

Tags

CCSS.7.RP.A.2A

Which set of ratios is NOT proportional?

• 1/2 and 7/14

• 3/5 and 6/10

• 7/9 and 4/6

• 1/10 and 5/50

Tags

CCSS.7.RP.A.2A

Which equation below is TRUE?

• 30 miles/1 hour = 31 miles/2 hours

• $5/1 lb = $8/2 lbs

• 25 words/1 minute = 30 words/5 minutes

• $1.50/1 gallon = $4.50/3 gallons

Tags

CCSS.6.RP.A.3B

Three students were asked whether or not the ratio below was proportional as well as to explain their reasoning. All three students decided that the ratios are proportional but each gave different reasons. Which student is correct? 1/2 and 5/10

• Student 1: "...because when you cross multiply, 1x10 and 2x5 both equal 10."

• Student 2: "...because when you convert each ratio to a decimal, they both equal 0.5."

• Student 3: "...because when you use common denominators to compare the fractions, 5/10 can reduce to 1/2."

• All three students have correct reasoning.

Tags

CCSS.6.RP.A.3A

Which equation will solve the proportion for x: 9/24 = x/40

• 24x = 9 · 40

• 9 · 24 = 40x

• 9x = 24 · 40

• All of the above.

Tags

CCSS.7.RP.A.2C

Solve the proportion below for x: 6/20 = x/30

• x = 16

• x = 9

• x = 10

• x = 11

Tags

CCSS.7.RP.A.2B

Bernie saves $1 for every $10 he makes. If he made $560 in one week, which proportion will solve for how much of that money he will save?

• $1/$10 = x/$560

• $1/$560 = x/$10

• $1/$10 = $560/x

• $1/$560 = $10/x

Tags

CCSS.7.RP.A.2C

Kadi purchases a laptop priced at $850, and she will also pay an 8% sales tax. Which proportion will solve for the amount of tax Kadi will pay?

• 8%/$850 = x/100%

• x/$850 = 100%/8%

• x/850 = 8%/100%

• 8%/x = $850/100%

Tags

CCSS.6.RP.A.3C

In a bowl, there are 3 green candies for every 5 red candies. If the bowl has a total of 160 candies (red & green only), which proportion will solve for the number of green candies in the bowl?

• 3/5 = x/160

• 3/8 = x/160

• 5/160 = x/3

• 3/160 = x/5

Devon orders a meal that costs $15.00. On his final bill, he sees he has also been charged $1.05 in tax, bringing his total bill to $16.05. Which proportion will solve for the rate of sales tax that was used on his bill?

• $1.05/$15 = 100%/x

• $1.05/x = $15/100%

• $1.05/$15 = x/100%

• $1.05 = x/$16.05

Tags

CCSS.6.RP.A.3C