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Using equivalence to calculate

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Why this, why now

In this unit pupils will explain why the product stays the same when one factor is doubled and the other is halved using knowledge of equivalence. They will explain the effect on the quotient when scaling the dividend and divisor by the same amount.

Prior knowledge requirements

  • Ardaydu waa inay yaqaanaan aasaaska maadada.
  • Ardaydu waa inay awoodaan inay raacaan tilmaamo fudud.
Unit 9 / 21

Using equivalence to calculate

In this unit pupils will explain why the product stays the same when one factor is doubled and the other is halved using knowledge of equivalence. They will explain the effect on the quotient when scaling the dividend and divisor by the same amount.

5 lessons
  1. Use knowledge of equivalence when scaling factors to solve problems
  2. Explain the effect on the quotient when scaling the dividend and the divisor by 10
  3. Explain why the product stays the same when one factor is doubled and the other is halved
  4. Explain the effect on the product when scaling the factors up and down by the same amount
  5. Explain the effect on the quotient when scaling the dividend and the divisor by the same amount