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Cornerstone · Grades 3–5 Keystones #1 6 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 2⁄5

    Answer: 24⁄35
  2. 2. Algebra Two-step equations

    Solve: 4x + 11 = 35

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 7cm

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 224 in the ratio 4:3:1

    Answer: 112, 84 and 28
  5. 5. Statistics Mean

    Find the mean of: 9, 14, 18

    Answer: 13.666666666667

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