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Cornerstone · Grades 3–5 Keystones #1 20 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 3⁄7

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

    Solve: 2x + 5 = 27

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

    Calculate the hypotenuse when a = 4cm and b = 13cm

    Answer: 13.6cm
  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: 10, 26, 46, 16, 42, 10, 32, 45

    Answer: 28.4

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