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Cornerstone · Grades 3–5 Keystones #1 12 December 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 12 December 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x - 9 = 41

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 8cm

    Answer: 8.54cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 19, 30, 9, 39, 34, 36, 19

    Answer: 26.6

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