Topic 6 Test

Derek has a collection of ten model cars. Each car is 3.25 inches long. If he lined up his cars in a row, how many inches long would the entire collection be?

• 325 inches

• 32.5 inches

• 0.325 inches

• 0.0325 inches

What is 0.57 × 1000?

• 0.5

• 7.5

• 75

• 750

What steps can be taken to find the product of 8.31 and 1,000?

• Move the decimal point 2 places to the right and annex 1 zero.

• Move the decimal point 2 places to the right and annex 2 zeros.

• Move the decimal point 3 places to the right and annex 1 zero.

• Move the decimal point 3 places to the right and annex 2 zeros.

Jason's family drinks 1.95 gallons of milk each week. Which is the best estimate of the number of gallons they will drink in half a year (26 weeks)?

• 52 gallons

• 45 gallons

• 40 gallons

• 30 gallons

Diego's math teacher gives quizzes with 20 questions each week. Diego's average for correct answers is 18.25. Which is the best estimate of Diego's total correct answers for the 4 tests last month?

• 78

• 76

• 72

• 68

Last month, Keiko bought 6 reggae CDs. Each CD cost $14.79, including tax. Which is the best estimate of the amount of money Keiko spent on her CDs?

• $75

• $80

• $84

• $90

Which of the following is the best estimate for 43.7 × 186.9?

• 8,080

• 80,080

• 800,800

• 8,000,800

How many decimal places will the product of 58.4 and 234.21 have?

• 1

• 2

• 3

• None

Which of the following is the best estimate for 5.07 × 0.81?

• 0.44

• 4.55

• None

• None

Tommy earns $8.00 an hour. How much will he earn for working 5.5 hours?

• $45.00

• $44.10

• $44.01

• $44.00