Ratio and Proportions

If there are 5 boys and 7 girls, write the ratio of girls to boys.

• 5 to 7
• 7 to 5
• 5 to 12
• 7 to 12

There are 13 boys and 10 girls in the classroom.  What is the ratio of boys to girls?

• 10 to 13
• 23 to 13
• 13 to 10
• 23 to 10

A bag of marbles comes with 3 blue marbles, 2 red marbles, and 5 yellow marbles. What is the ratio of red to yellow?

• 2 to 5
• 5 to 3
• 3 to 5
• 5 to 2

What is the ratio of flames to arms on the candle?

• 3:2
• 3:5
• 11/10

What is an equivalent ratio to 3/4?

• 1/4
• 4/5
• 12/16
• 14/18

What is a Ratio?

• Is a comparison of two quantities 
• To multiply two fractions 
• A number over another number
• Two decimals that can be multiplied

In the fruit bowl there are 4 apples, 2 bananas, and 5 pears.  What is the ratio of pears to ALL fruit?

• 5:4
• 5:11
• 2:5
• 6:5

There are 3 boys and 4 girls from the 6th grade marching band. What is the ratio of boys to girls?

• 3:7
• 4:3
• 7:3
• 3:4

There are 13 boys and 7 girls in the school's robotics club. What is the ratio of girls to the total number of students in the club?

• 13:7
• 7:13
• 7:20
• 13:20

Last month, Carly paid a gas and electric bill that totaled $90. The gas portion of the bill was $30. What is the ratio of money spent on gas to money spent on electric?

• 90:30
• 30:60
• 45:90
• 60:30