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Cornerstone · Grades 3–5 Keystones #1 24 July 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 July 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 3⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x - 12 = 32

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

    Calculate the hypotenuse when a = 5cm and b = 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 125 in the ratio 2:1:2

    Answer: 50, 25 and 50
  5. 5. Statistics Mean

    Find the mean of: 9, 3, 4, 20

    Answer: 9

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