AC9M4N05 • Year 4 Maths

Multiplying and Dividing by Multiples and Powers of 10 (AC9M4N05)

solve problems involving multiplying or dividing natural numbers by multiples and powers of 10 without a calculator, using the multiplicative relationship between the place value of digits

Choose a learning activity. Practice and Test use short shuffled attempts. Repeat quiz practice to access more of the full question bank.

Unit focus

  • Multiplying by 10, 100 or 1 000 makes each digit worth 10, 100 or 1 000 times as much. Dividing reverses this relationship when the quotient is a natural number.
  • Use this routine: Identify factor or divisor → Track place-value shift → Calculate → Interpret units → Check inverse.
  • Watch for add zeros rule used blindly: Place-value reasoning explains when and why placeholder zeros appear.
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