Ratio and Proportion

A ratio is __________ of two values.

• a multiplication

• a comparison

• a summation

• an expansion

The ratio “x is to y” is written as:

• x --> y

• x^y

• x : y

• x_y

Which of the following is true when writing a ratio?

• The terms of the ratio should follow the same order of quantities being compared.

• The terms of the ratio can be arranged in any way without changing the meaning.

• Ratios must be written using complicated mathematical equations that follow PEMDAS.

• Ratios must be written using capital letters and numbers ending in zeroes.

In a class, there are 11 boys and 13 girls. What is the ratio of the number of girls to the number of boys?

• 13 : 24

• 11 : 13

• 24 : 13

• 13 : 11

There are 120 mango trees and 150 rambutan trees in an orchard. What is the ratio of mango to rambutan trees in fraction form?

• 4/5

• 5/4

• 4/3

• 3/4

Claire’s allowance is 1115 of Nathan’s allowance. How many times bigger is Nathan’s allowance than Claire’s?

• 11/15

• 4/15

• 15/11

• 11/4

In a play set, the number of squares is 2 5/6 times that of the circles. What fraction of the number of squares is the number of circles?

• 17/11

• 6/11

• 11/17

• 6/17

Which of the following best illustrates the ratio 4:6?

• 
• 
• 
• 

Mother allots 4/5 of our monthly income for expenses and saves the remainder. What is the ratio of the money Mother allots for expenses to the amount she saves?

• 4 : 1

• 1 : 4

• 9 :1

• 5 : 9

George has 6 pens, 4 pencils, 2 erasers, and 8 notebooks. What is the ratio of his pens and pencils to his notebooks?

• 1 : 1

• 4 : 5

• 5 : 4

• 3 : 2