Starter quiz

  • Complete the statement. The additive ______ of a number is a number that, when added to the original number, gives the sum of zero.
    • 'inverse' ✓
  • Match together each of these subtractions with its equivalent addition.
    • 8 - 5
      ⇔
      8 + (-5) ✓
    • 5 - 8
      ⇔
      5 + (-8) ✓
    • 8 - (-5)
      ⇔
      8 + 5 ✓
    • (-5) - 8
      ⇔
      (-5) + (-8) ✓
  • Match each calculation to its answer.
    • 8 - 5
      ⇔
      3 ✓
    • 5 - 8
      ⇔
      (-3) ✓
    • 8 - (-5)
      ⇔
      13 ✓
    • (-5) - 8
      ⇔
      (-13) ✓
  • Work out 12 - (-8)
    • -20
    • -4
    • 4
    • 20  ✓
  • Select the calculations which are equivalent to 15 - 20
    • 15 - 15 - 5  ✓
    • 15 + (-15) + (-5)  ✓
    • 15 - (-15) - (-5)
    • 15 + (-20)  ✓
    • 15 + (-15) - (-5)
  • Lucas has a balance of £2.72 at the school canteen. He spends £5. What is Lucas' new balance?
    • -£7.72
    • -£2.28  ✓
    • -£2.38
    • £2.28
    • £2.38
+