Name _____________________________________________________ Period _____ Date ______________

Unit Assessment Review - Concept Category 1: Ratio, Rate, & Conversion

DOK1 – Basic Skills

1. In a zoo, there are 8 zebras and 10 elephants.

a. What is the simplified ratio of zebras to elephants?

b. What is the simplified ratio of zebras to all of the zebras and elephants combined?

2. An 8-ounce package contains 20 chips. How many chips would you expect in a 12-ounce package?

3. Silly Sally has 210 marbles in 5 bags. If each bag has the same number of marbles, how many marbles are in each bag?

4. Joey bought 4 sandwiches for $18.60

a. How much does it cost for 1 sandwich?

b. How much does it cost for 6 sandwiches?

5. How many quarts are there in 24 cups?

6. How many feet is 6 yards?

DOK2 – Routine Word Problems

7. The ratio of girls to boys in Mr. Copper’s math class is 3:2.

a. If Mr. Copper has 12 boys in his class, how many girls does he have? Show your work.

b. Mrs. Green’s class has the same total number of students as Mr. Copper’s class. The ratio of girls to boys in Mrs. Green’s class is 2:1. Which class (Mr. Copper or Mrs. Green) has the greater number of girls? Explain how you know.

8. Stacy needs to buy some orange juice for a party. Trader Joe’s is selling one gallon of orange juice for $2.40 and Pavilion’s is selling 5 quarts of orange juice for $3.25. Which is a better deal? Show your work and explain your reasoning.

DOK3

9. Lupita and Harry are both runners. Harry runs at a rate of 6 yards in 5 seconds. Lupita runs 7 yards in six seconds.

Who runs at a faster rate, Lupita or Harry? Show your work.

10. Consider the following ratio problem.

The ratio of boys to girls in a classroom of students is 4: 5. If there are a total of 36 students in the classroom, how many boys are in the classroom? How many girls are in the classroom?

Melinda solved this problem using a tape diagram. Review her solution below.

36

Boys 9 9 9 9 Answer: There are 36 boys and 45 girls in the classroom.

Girls 9 9 9 9 9

a. Do you agree or disagree with Melinda’s solution? Explain your thinking.

b. If you agree with Melinda’s solution above, solve the same problem using a different strategy to prove that her solution is correct.If you do not agree with Melinda’s solution, solve the problem correctly using any strategy of your choosing.