Mental and written addition and subtraction · seed 1 · A4, ink-friendly. The answer key prints on its own page for grown-ups.

Solving money, length and weight problems

Mathematics · Addition & Subtraction · ages 6-7
Name ______________________   Date ____________

  1. Mia has 20p. She spends 5p, then finds 2p. How much money does she have now?

    024681012151720-5p+2p
    • 15p
    • 17p
    • 27p

  2. A ribbon is 45 cm long. You cut off 18 cm. How much is left?

    • 25 cm
    • 27 cm
    • 26 cm
    • 28 cm

  3. What is 20 + 6 - 4?

    Answer: ______________

  4. A dog weighs 25kg. After a diet, it loses 6kg. How much does the dog weigh now?

    • 19kg
    • 31kg
    • 18kg

  5. For 456 + 379, a written column method is sensible. Is that a good choice?

    Circle one:   True   False

  6. What is 52 - 27?

    • 26
    • 35
    • 25
    • 24

  7. What is 46 + 23 - 10?

    Answer: ______________

  8. Which sum is easier to do in your head: 50 - 20, or 84 - 37?

    • 84 - 37
    • 50 - 20
    • Both are exactly the same to work out

  9. Tom had 60p. He spent 25p, then earned 10p for a chore. He says he now has 25p. What mistake did Tom make?

    • He forgot he started with 60p
    • He added the 25p instead of subtracting it
    • He subtracted the 10p instead of adding it

  10. 100 - 25 + 25 = 100. Is that right?

    Circle one:   True   False

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Answer key

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

Solving money, length and weight problems W1-mt_wzAZ8qFDc4-s1

  1. 17p · First subtract the 5p she spent: 20p - 5p = 15p. Then add the 2p she found: 15p + 2p = 17p.
  2. 27 cm · 45 - 18 = 27 cm.
  3. 22 · 20 + 6 = 26, take 4 gives 22.
  4. 19kg · Subtract because the dog lost weight: 25kg - 6kg = 19kg.
  5. True · Yes: big numbers with carries suit columns.
  6. 25 · 52 - 20 - 7 = 25.
  7. 59 · 46 + 23 = 69, take 10 gives 59.
  8. 50 - 20 · 50 - 20 uses round numbers, so you can picture it in your head. 84 - 37 needs borrowing, so writing it down helps.
  9. He subtracted the 10p instead of adding it · Tom needed to add the 10p he earned, not subtract it. The correct working is 60p - 25p + 10p = 45p.
  10. True · Right: take 25 then give 25 back.
Worksheet · LightMySky