Decimals Word Problems Practice Questions Set 2 (page 2)

Decimals Word Problems

We use decimals every day–to express amounts of money, or to measure distances and quantities. This set of practice problems includes word problems that help you practice your skills in rounding decimals, as well as performing basic mathematical operations with them.

1. Find the product of 5.2 × 10³ and 6.5 × 10⁷. Write your answer in scientific notation.
   1. 33.8 × 10²¹
   2. 3.38 × 10¹¹
   3. 33.8 × 10¹⁰
   4. 3.38 × 10⁹
2. Brian's 100-yard dash time was 2.68 seconds more than the school record. Brian's time was 13.4 seconds. What is the school record?
   1. 10.72 seconds
   2. 11.28 seconds
   3. 10.78 seconds
   4. 16.08 seconds
3. Ryan's gym membership costs him $390 per year. He pays this in twelve equal installments a year. How much is each installment?
   1. 1170
   2. 42.25
   3. 4680
   4. 32.5
4. How much greater is 0.0543 than 0.002?
   1. 0.0343
   2. 0.0072
   3. 0.0523
   4. 0.0563
5. Kevin ran 6.8 miles yesterday and 10.5 miles today. How many more miles did he run today?
   1. 3.7
   2. 4.7
   3. 4.3
   4. 5.9
6. Jay bought twenty-five $0.39 stamps. How much did he spend?
   1. 5.69
   2. 7.84
   3. 2.88
   4. 9.75
7. Which number falls between 5.56 and 5.81?
   1. 5.54
   2. 5.87
   3. 5.6
   4. 5.27
8. Hanna's sales goal for the week is $5,000. So far she has sold $3,574.38 worth of merchandise. How much more does she need to sell to meet her goal?
   1. 2425.38
   2. 1329.4
   3. 2574.38
   4. 1425.62
9. Which of the following decimals is the greatest number?
   1. 0.064
   2. 0.007
   3. 0.1
   4. 0.04236
10. Andy earned the following grades on his four math quizzes: 97, 78, 84, and 86. What is the average of his four quiz grades?
    1. 82.5
    2. 86.25
    3. 81.5
    4. 87
11. Luis runs at a rate of 11.7 feet per second. How far does he run in 5 seconds?
    1. 585 feet
    2. 490.65 feet
    3. 58.5 feet
    4. 55.5 feet
12. Nancy, Jennifer, Alex, and Joy ran a race. Nancy's time was 50.24 seconds, Jennifer's was 50.32, Alex's was 50.9, and Joy's was 50.2. Whose time was the fastest?
    1. Nancy
    2. Jennifer
    3. Alex
    4. Joy
13. Mike can jog 6.5 miles per hour. At this rate, how many miles will he jog in 1 hour and 30 minutes?
    1. 9.75 miles
    2. 4.7 miles
    3. 9 miles
    4. 10.75 miles
14. What decimal is represented by point A on the number line?



1. 0.77
2. 0.752
3. 0.765
4. 0.73
15. Nicole is making 20 gift baskets. She has 15 pounds of chocolates to distribute equally among the baskets. If each basket gets the same amountof chocolates, how many pounds should Nicole put in each basket?
    1. 1.3 pounds
    2. 0.8 pounds
    3. 0.75 pounds
    4. 3 pounds
16. A librarian is returning library books to the shelf. She uses the call numbers to determine where the books belong. She needs to place a book about perennials with a call number of 635.93. Between which two call numbers should she place the book?
    1. 635.8 and 635.9
    2. 635.8 and 635.95
    3. 635.935 and 635.94
    4. 635.99 and 636.0
17. Michael made 19 out of 30 free-throws this basketball season. Larry's free-throw average was 0.745 and Charles' was 0.81. John made 47 out of 86 free-throws. Who is the best free-throw shooter?
    1. Michael
    2. Larry
    3. Charles
    4. John
18. Which number below is described by the following statements? The hundredths digit is 4 and the tenths digit is twice the thousandths digit.
    1. 0.643
    2. 0.0844
    3. 0.446
    4. 0.0142
19. If a telephone pole weighs 11.5 pounds per foot, how much does a 32-foot pole weigh?
    1. 368 pounds
    2. 357 pounds
    3. 346 pounds
    4. 338.5 pounds
20. Amy purchased 6 books at $4.89 each. How much did the books cost altogether?
    1. 24.84
    2. 25.56
    3. 29.34
    4. 30.14