Big Ideas Ratios

Simplify: 27 to 45

• 1 to 3

• 5 : 3

• 3 to 5

• 2 : 3

Simplify: 30 : 36

• 4 : 5

• 5 to 6

• 6 : 5

• 2 to 3

Simplify: 35 : 49

• 7 to 5

• 5 : 7

• 3 to 7

• 7 : 9

There are 20 girls and 16 boys in the seventh grade. What is the ratio of boys to girls in the seventh grade? Remember to simplify if necessary.

• 1 : 10

• 4 to 5

• 2 to 5

• 3 : 4

There are 17 girls and 15 boys in the seventh grade. What is the ratio of girls to ALL students in the seventh grade?

• 32 to 17

• 15 to 32

• 17 : 32

• 32 : 15

My mother has 3 dimes, 4 nickels, and 6 quarters in her change purse. What is the ratio of nickels to dimes in her change purse?

• 3 to 4

• 4 : 3

• 7 : 6

• 2 to 3

My mother has 3 dimes, 4 nickels, and 6 quarters in her change purse. What is the ratio of nickels to quarters in her change purse? Remember to simplify if necessary.

• 1 to 2

• 3 to 4

• 2 : 3

• 3 : 2

My brother has a bag of marbles. He has 9 green marbles, 8 yellow marbles, and 7 red marbles. What is the ratio of yellow marbles to green marbles?

• 8 : 7

• 7 to 9

• 9 : 7

• 8 to 9

Which is not a rate?

• 2 players per team

• 7 gallons of gas

• 8 miles per gallon

• $12.00 for 3 pounds of hamburger meat

Which ratio represents a unit rate?

• 140 miles every 2 hours

• 4 pounds for 12 dollars

• 23 miles per gallon

• $20 for 2 hours of work