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Cornerstone · Grades 3–5 Keystones #1 18 September 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 2⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 8x - 19 = 53

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Share 28 in the ratio 1:3

    Answer: 7 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 10, 8, 11, 29, 23, 14, 7, 43

    Answer: 18.1