Lesson 28

Five volunteers collected bottles to be recycled. The number they collected were: 242, 236, 248, 268, and 226. What was the average number of bottles collected by the volunteers?

• 244

• 244.4

• 244.8

• 245

Yori ran a mile in 5 minutes 14 seconds. How many seconds did it take Yori to run a mile?

• 314 seconds

• 3140 seconds

• 31400 seconds

• 31.4 seconds

Luisa bought a pair of pants for $24.95 and 3 blouses for $15.99 each. Altogether, how much did she spend?

• $72.92

• $72.93

• $72.94

• $72.95

The Italian navigator Christopher Columbus was 41 years old when he reached the Americas in 1492. In what year was he born?

• 1451

• 1450

• 1449

• 1452

In the following statement, change the percent to a reduced fraction. Then diagram the statement and answer the questions. Salma led for 75% of the 5000-meter race. a. Salma led the race for how many meters? b. Salma did not lead the race for how many meters?

• a. 3750 meters, b. 1250 meters

• a. 3500 meters, b. 1500 meters

• a. 4000 meters, b. 1000 meters

• a. 3000 meters, b. 2000 meters

This rectangle is twice as long as it is wide. What is the perimeter and area of the rectangle if the width is 5 units?

• Perimeter: 30 units, Area: 50 square units

• Perimeter: 20 units, Area: 25 square units

• Perimeter: 40 units, Area: 100 square units

• Perimeter: 25 units, Area: 60 square units

What are the first six multiples of 3?

• 3, 6, 9, 12, 15, 18

• 3, 5, 7, 9, 11, 13

• 3, 6, 12, 18, 24, 30

• 3, 9, 15, 21, 27, 33

What are the first six multiples of 4?

• 4, 8, 12, 16, 20, 24

• 4, 8, 12, 16, 20, 28

• 4, 8, 12, 16, 22, 24

• 4, 8, 10, 16, 20, 24

What is the LCM of 3 and 4?

• 6

• 9

• 12

• 15

Use prime factorization to find the least common multiple of 27 and 36.

• 108

• 72

• 54

• 144