Math Topic 10 Test

There are 7 boys and 4 girls in the school robotics club. Write the ratio of the number of boys to the number of girls.

• 7:4

• 4:7

• 3:7

• 7:5

Last month, Carmen paid a gas and electric utility bill of $55. The electricity part of the bill was $25. Write the ratio of the payment for gas to the payment for electricity.

• 30:55

• 20:30

• 30:25

• 25:55

There are 15 boys and 16 girls in the school jazz band. Find the ratio of the number of boys in the band to the total number of students in the band.

• 15:16

• 16:15

• 15:31

• 33:1

Use the multiplication table. Which ratio is NOT equivalent to 24 : 28.

• 42:49

• 30:35

• 36:42

• 48:64

Fill in the blank. 20:25=12:_____

• 15

• 20

• 30

• 5

In Ms. Harrington’s sixth grade class, 24 out of 28 students bought their lunch. How many students out of every 7 bought their lunch? Fill in the blank.

• Out of every 7 students, 6 brought their lunch.

• Out of every 7 students, 3 brought their lunch.

• Out of every 7 students, 11 brought their lunch.

The attendant at a parking lot compared the number of hybrid vehicles to the total number of vehicles in the lot over a weekend. The ratios for the three days were equivalent. Complete the table.

• 21

• 27

• 30

• 10

A baker uses 21 cups of flour and 27 cups of water for a recipe. The flour-to-water ratio is 21 : 27. How much water does the baker need if he uses only 7 cups of flour?

• 12

• 10

• 9

• 1

Are the ratios 14/63 and 20/30 equivalent? Show your work to prove if they are equivalent or not. (Hint: Simplify both first)

• Yes

• No

The table shows the ratio of games lost to games played for the school basketball team. Complete the table by writing the ratio as a fraction and as a decimal.

• fraction: 19/20 Decimal: 0.95

• fraction: 20/19 Decimal: 1.95

• fraction: 39/19 Decimal: 3.5