Decimal/fraction review

Evaluate the expression:

• 23

• 24

• 22

• 21

Evaluate the expression:

• 1

• 2

• 0

• 3

The hundreds model in the figure is shaded to represent the multiplying of two numbers.

What equation correctly matches the model?

• 0.4 x 0.8 = 0.32

• 0.04 x 0.08 = 0.032

• 4 x 8 = 32

• 0.8 x 0.4 = 32

Karen’s dog weighs 38.2 pounds. Mark’s dog weighs 3.2 times as much as Karen’s dog. What does Mark’s dog weigh in pounds?

• 12.2 pounds

• 1.2224 pounds

• 1222.4 pounds

• 122.24 pounds

Kevin spent $3.85 on snacks every day for 14 days. What is the amount of money Kevin spent on these snacks?

• $ 5.39

• $ 539.0

• $ 53.90

• $ 63.90

Darla saved $40.80 over 6 weeks. She saved the same amount of money each week. How much did she save each week?

• $ 68.00

• $ 6.80

• $ 67.00

• $ 6.70

The atomic weight of the element potassium is thirty-nine and one hundred forty-two thousandths. What is the standard form of this number?

• 39.142

• 39.42

• 391.42

• 39.1042

Shelly wrote the expanded notation for sixty-seven and seven hundred thirty-four thousandths. What is the expanded form of the number Shelly wrote?

• (6 x 10) + (7 x 1 ) + (7 x .1) + ( 3 x .01) + ( 4 x .001)

• (6 x 100) + (7 x 10 ) + (7 x 1) + ( 3 x .01) + ( 4 x .001)

• (6 x 10) + (7 x 1 ) + (7 x .01) + ( 3 x .01) + ( 4 x .001)

• (6 x 10) + (7 x 1 ) + (7 x .1) + ( 3 x .001) + ( 4 x .001)

What is 3.761 rounded to the nearest hundredth?

• 3.77

• 3.761

• 3.76

• 3.8

• 8.0

• 8.1

• 8.2

• 7.2