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

Miles and Kilometres

Mathematics · Measurement · ages 10-11
Name ______________________   Date ____________

  1. Convert 5 miles to kilometres using 1 mile = 1.6 km.

    Answer: ______________

  2. About how many kilometres is a 10 mile journey? Use 1 mile = 1.6 km.

    • 6
    • 10
    • 16
    • 26

  3. Which rule correctly links miles and kilometres?

    • 5 miles ≈ 8 km
    • 5 miles ≈ 5 km
    • 8 miles ≈ 5 km

  4. The number 1.6 gives an exact conversion from miles to kilometres, with no rounding needed.

    Circle one:   True   False

  5. A 6 mile run is measured in kilometres using 1 mile = 1.6 km. How many kilometres is it?

    Answer: ______________

  6. Which calculation shows where the ×1.6 conversion factor comes from?

    • 8 − 5 = 1.6
    • 8 ÷ 5 = 1.6
    • 8 × 5 = 1.6

  7. Convert 40 miles to kilometres using 1 mile = 1.6 km.

    • 48
    • 54
    • 60
    • 64

  8. A 10 km race is longer than a 6 mile run. Ana disagrees and says the 6 mile run is longer. Is Ana right?

    Circle one:   True   False

  9. Ali converts 25 miles by adding a fixed 3, saying 25 + 3 = 28 km. What went wrong?

    • He should have used miles instead of km
    • He forgot to round the answer
    • He added instead of scaling by the 5-to-8 pattern

  10. Which race is longest?

    • A 6 mile run
    • A 10 km race
    • A 5 mile run
    • A 9 km race
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Answer key

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

Miles and Kilometres W1-mt_3tPI0HqqcN-s1

  1. 8 · The answer is 8 km because 5 times 1.6 equals 8.
  2. 16 · 16 km is correct because 10 times 1.6 equals 16.
  3. 5 miles ≈ 8 km · 5 miles and 8 km cover about the same distance. This is the key rule for converting between the two units.
  4. False · 1.6 is an approximation. It comes from 8 ÷ 5, close enough for everyday estimates but not perfectly exact.
  5. 9.6 · It is 9.6 km because 6 times 1.6 equals 9.6.
  6. 8 ÷ 5 = 1.6 · 1.6 comes from dividing 8 km by 5 miles. That tells you how many km match each single mile.
  7. 64 · 64 km is correct because 40 times 1.6 equals 64.
  8. False · Ana is wrong. The 6 mile run is 9.6 km, which is shorter than 10 km.
  9. He added instead of scaling by the 5-to-8 pattern · The miles-to-km rule scales up, it doesn't add a fixed amount. 25 miles is five groups of 5, so it's about 5 × 8 = 40 km.
  10. A 10 km race · The 10 km race is longest: the 6 mile run is 9.6 km, the 5 mile run is 8 km, and 9 km is 9 km.
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