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

Being Precise in Maths

Mathematics · Mathematical Thinking · ages 8-9
Name ______________________   Date ____________

  1. A rectangle is 7 cm by 9 cm. What is its area?

    Answer: ______________

  2. Which pair names the same amount?

    • Three fourths and three quarters
    • Three fourths and three thirds
    • Three quarters and three halves
    • Three fourths and four thirds

  3. A bar is split into 4 equal parts, and 3 of them are shaded. Which is another correct name for this fraction, besides 'three fourths'?

    • 3 quarters
    • Four thirds
    • Three halves

  4. Writing '15:45' is a correct way to show a time in 24-hour notation.

    121234567891011

    Circle one:   True   False

  5. In 24 hour notation, 3:45 pm keeps its minutes and changes its hour. What is the new hour number?

    Answer: ______________

  6. A train leaves at 3:45 pm. Write this time in 24-hour notation as a single number, like 0930 for 9:30 am.

    Answer: ______________

  7. Which shows quarter to four in the afternoon in 24 hour notation?

    • 03:45
    • 14:45
    • 15:45
    • 16:45

  8. Izzy says three fourths and three quarters are different amounts. Is Izzy right?

    Circle one:   True   False

  9. Which is NOT a correct way to read the fraction 3/4?

    • Three fourths
    • Three per four
    • Three quarters

  10. From 9:20 up to 10:00, how many minutes pass?

    Answer: ______________

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Answer key

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

Being Precise in Maths W1-mt_mywsN77hGZ-s1

  1. 63 · The area is 63 square centimetres because 7 x 9 = 63.
  2. Three fourths and three quarters · Three fourths and three quarters is correct because fourth and quarter are two names for the same piece.
  3. 3 quarters · Three fourths and three quarters both mean 3 out of 4 equal parts. They are two names for the same fraction.
  4. True · 15:45 uses the 24-hour clock, where the hours keep counting past 12 instead of starting over.
  5. 15 · The hour is 15 because 3 + 12 = 15.
  6. 1545 · 3 pm is 15:00 in 24-hour time, so 3:45 pm becomes 1545.
  7. 15:45 · 15:45 is correct because 3:45 pm adds 12 hours: 3 + 12 = 15.
  8. False · Izzy is wrong because fourth and quarter name the same piece, so 3 of either is the same amount.
  9. Three per four · Three fourths and three quarters are both accepted names for 3/4. 'Three per four' is not a standard way to read a fraction.
  10. 40 · 40 minutes pass because 60 - 20 = 40.
Worksheet · LightMySky