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Cornerstone · Grades 3–5 Keystones #1 24 May 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 May 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x + 8 = 24

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

    Calculate the hypotenuse when a = 5cm and b = 15cm

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 1:3

    Answer: 10 and 30
  5. 5. Statistics Mean

    Find the mean of: 4, 11, 19, 5, 3

    Answer: 8.4

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