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Cornerstone · Grades 3–5 Keystones #1 23 November 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 November 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 1⁄5

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

    Solve: 2x - 14 = 2

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 7cm

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Share 78 in the ratio 2:1

    Answer: 52 and 26
  5. 5. Statistics Mean

    Find the mean of: 5, 11, 10, 12, 14

    Answer: 10.4

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