Rounding Answers · seed 1 · A4, ink-friendly. The answer key prints on its own page for grown-ups.

Rounding Answers to the Right Accuracy

Mathematics · Multiplication & Division · ages 10-11
Name ______________________   Date ____________

  1. How many decimal places does an amount of money in pounds need, since a penny is the smallest unit?

    • 1
    • 2
    • 3

  2. A bottle of 24 pain relief tablets costs $4.99. What is the price per tablet? Round your answer to the nearest penny and give it as a decimal (like 0.35).

    Answer: ______________

  3. It takes 12 seconds to pop a strip of bubble wrap that has 5 bubbles. About how many seconds does it take per bubble? Round your answer to one decimal place.

    Answer: ______________

  4. To round a number to one decimal place, which digit tells you whether to round up or down?

    • The second decimal digit
    • The first decimal digit
    • The whole number digit

  5. A troop sold 340 boxes of cookies. Each shipping case holds 12 boxes. How many cases are needed to ship every box of cookies?

    Answer: ______________

  6. A gas pump shows that 10 gallons of gas cost $34.87 total. What is the price per gallon? Round your answer to the nearest penny and give it as a decimal.

    Answer: ______________

  7. A cafe splits a £9.20 bill evenly between 3 friends. What does each friend pay, rounded to the nearest penny?

    • £3.06
    • £3.00
    • £3.07

  8. A jacket costs $89.99. It's on sale for 30% off. How much money do you save? Round your answer to the nearest penny and give it as a decimal.

    Answer: ______________

  9. A popcorn machine makes 500 ounces of popcorn. Each bucket holds 32 ounces. How many buckets can be filled completely?

    Answer: ______________

  10. Tom needs 6-seat tables for 52 guests. He calculates 52 divided by 6 is 8.6666... and rounds it to 8.7 tables. What mistake did Tom make?

    • He rounded to the wrong number of decimal places
    • He should have rounded up to 9 whole tables, not 8.7
    • He divided the numbers incorrectly
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Answer key

For grown-ups. Fold this page away before handing over the rest.

Rounding Answers to the Right Accuracy W1-mt_QU5R7Aajy9-s1

  1. 2 · Money is written to 2 decimal places because a penny is one hundredth of a pound.
  2. 0.21 · Since money is measured in whole cents, we round the price per tablet to the nearest penny.
  3. 2.4 · Dividing the total seconds by the number of bubbles shares the time out evenly.
  4. The second decimal digit · The digit right after the one you are rounding to tells you whether to round up or keep it the same.
  5. 29 · Any leftover boxes still need a case of their own, so we round up to the next whole case.
  6. 3.49 · Gas prices are measured in whole cents, so we round to the nearest penny.
  7. £3.07 · £9.20 divided by 3 is £3.0666... The third decimal digit is 6, so the pennies round up to £3.07.
  8. 27 · Money amounts get rounded to the nearest penny, even when the raw calculation has more decimal places.
  9. 15 · This time the leftover popcorn isn't enough for another full bucket, so we round down instead of up.
  10. He should have rounded up to 9 whole tables, not 8.7 · Tables cannot be split into decimals, so Tom needed to round up to a whole number of tables: 9, not a decimal answer.
Worksheet · LightMySky