___________
Maths
Arithmetic procedures with integers and decimals

Starter quiz

  • An operation is __________ if a repeated application of the operation produces the same result regardless of how pairs of values are grouped.
    • commutative
    • associative  ✓
    • irregular
    • unneeccary
  • Select all the examples of the associative law.
    • 31 + 4 = 4 + 31
    • (17 + 3) + 3 = 17 + (3 + 3)  ✓
    • 2 × 8 × 5 = 2 × (8 × 5)  ✓
    • 15 – 10 = 10 – 15
  • Use the commutative law you can rewrite 10 + 4 as ______.
    • '4 + 10' ✓
  • Match each calculation to an equivalent commutative calculation.
    • 3 + 12 + 4
      ⇔
      12 + 3 + 4 ✓
    • 3 × 12 × 4
      ⇔
      4 × 3 × 12 ✓
    • A + 3 + B
      ⇔
      B + A + 3 ✓
  • Andeep says, "Division is commutative because 12 ÷ 4 ÷ 3 = 1 and is the same as 12 ÷ 3 ÷ 4 = 1." Select the correct statement.
    • He is correct as both answers do equal 1.
    • He is incorrect as the commutative law would also give 4 ÷ 3 ÷ 12 which isn't 1  ✓
    • He is correct as he has repositioned all the numbers.
  • The sum of the first 10 integers is ______. (Do not use a calculator.)
    • '55' ✓
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