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Cornerstone · Grades 3–5 Keystones #1 23 August 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 August 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 1⁄7

    Answer: 33⁄35
  2. 2. Algebra Two-step equations

    Solve: 6x - 17 = 7

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 11cm

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 2:3

    Answer: 18 and 27
  5. 5. Statistics Mean

    Calculate the mean of: 14, 36, 34, 41, 25, 28, 27

    Answer: 29.3

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