quiz 17 Unit 8

Question 1

Find the simple interest if the principal is $500, the rate is 10%, and the time is 1 year.

Answer 1

500 x .1 x 1 = $50

Question 2

Find the commission if the rate is 5% and the sales are $8,500.

Answer 2

8500 x .05 = $425

Question 3

Convert 3/4 cup cocoa in a recipe that serves 10 to one that serves 5.

Answer 3

3/4 x 1/2 = 3/8 c.

Question 4

Find the gross pay for working 20 hours at the rate of $9.80 per hour.

Answer 4

20 x 9.8 = $196

Question 5

Find the cost for 1,300 kilowatt-hours of electricity at the rate of 8.7 cents per kilowatt-hour.

Answer 5

1300 x .087 = $113.10

Question 6

Find the unit price of 5 ounces at $1.10.

Answer 6

1.10 divided by 5 = $.22 or

22 cents

Question 7

Subtract 3 hours 20 minutes from 5 hours 15 minutes.

Answer 7

Because 20 min is > 15 min, change 5 hr 15 min. to 4 hr 75 min. So 4-3 = 1 & 75-20 = 55.
1 hr. 55 min.

Question 8

Convert 24 teaspoons to tablespoons.

Answer 8

24 divided by 3 = 8 tbsp.

Question 9

Find the percent of decrease from $80 to $60.

Answer 9

80 - 60 = 20, so you have a $20 decrease. 20 divided by 80 = .25 or
25% decrease

Question 10

Multiply 5.6 by 100

Answer 10

560

Question 11

Round off $56.8796 to the nearest cent.

Answer 11

$56.88

Question 12

Express 1/4% as a decimal.

Answer 12

.0025

Question 13

Write the missing number in the proportion:

5/8 = ___/16.

Answer 13

10 because 8x2=16, so 5x2=10

Question 14

Express 5/6 as a repeating decimal

Answer 14

.83 (with a line over the 3)

Question 15

Choose the longer: meter or yard

Answer 15

meter

Question 16

Choose the greater: .05 or .049

Answer 16

.05