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Cornerstone · Grades 3–5 Keystones #1 12 June 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 2x + 13 = 25

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 1:2

    Answer: 30 and 60
  5. 5. Statistics Mean

    Find the mean of: 7, 11, 14, 1, 2

    Answer: 7

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