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Cornerstone · Grades 3–5 Keystones #1 13 April 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 April 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 1⁄8

    Answer: 15⁄56
  2. 2. Algebra Two-step equations

    Solve: 2x + 14 = 20

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

    Calculate the hypotenuse when a = 4cm and b = 9cm

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Divide 90 in the ratio 1:3:2

    Answer: 15, 45 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 40, 37, 26, 25, 12, 24

    Answer: 27.3

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