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Grade 9 Mathematics Revision & Practice

The free marking guide shows both a calculation and how marks are assigned. Compare a fraction method with a mental method using 10% or 5%. If two methods disagree, check the number used as the whole before changing the arithmetic.

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Make percentage calculations transparent

  1. Identify the original quantity.
  2. Write the percentage as a fraction out of 100.
  3. Check the size of your answer against the whole.

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