Mathematics Quiz: Ratio, Proportion & Percent

In a class of 20 students, there are 12 boys and the rest are girls. What is the ratio of boys to girls?

• 3:2

• 2:1

• 4:3

• 5:4

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

In a bag of marbles, the ratio of red marbles to blue marbles is 3:5. If there are 24 blue marbles, how many red marbles are there?

• 9

• 12

• 20

• 15

Christy wants to bake 4 batches of cookies. The recipe calls for 2 cups of flour and 3 cups of sugar. How many cups of sugar does she need in total?

• 15 cups

• 12 cups

• 5 cups

• 10 cups

Tags

CCSS.3.OA.A.3

In a farm, the ratio of the length to the width of a rectangular field is 3:2. If the width is 8 meters, what is the length?

• 12 meters

• 15 meters

• 6 meters

• 10 meters

Christy, Aia, and Thea went to a bakery and bought a cake. They divided the cake equally among themselves. What percentage of the cake did each of them get?

• 75%

• 25%

• 100%

• 50%

What is 25% of 80?

• 15

• 30

• 20

• 40

Tags

CCSS.6.RP.A.3C

If a shirt originally costs $40 and is now on sale for 20% off, what is the sale price?

• $25

• $32

• $35

• $30

Tags

CCSS.6.RP.A.3C

Thirdy and Christy are comparing the quantities of apples to oranges in a basket. If there are 5 apples and 8 oranges, what is the comparison?

• 10:5

• 5:8

• 2:3

• 3:5

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

If in a group of students, the ratio of boys to girls is 2:3, and there are 15 girls, how many boys are there?

• 25

• 10

• 5

• 20

Solve the proportion: Aia has 4 out of 5 apples, how many apples does she have if Thea has 20 apples?

• 5

• 10

• 16

• 15