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Cornerstone · Grades 3–5 Keystones #1 25 July 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 25 July 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 1⁄8

    Answer: 1⁄4
  2. 2. Algebra Two-step equations

    Solve: 5x + 15 = 70

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 13cm

    Answer: 16.4cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 2:3

    Answer: 28 and 42
  5. 5. Statistics Mean

    Find the mean of: 4, 13, 13, 11

    Answer: 10.25

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