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Cornerstone · Grades 3–5 Keystones #1 5 December 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 December 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 1⁄7

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

    Solve: 4x - 18 = 22

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.56cm
  4. 4. Ratio Sharing in a ratio

    Share 33 in the ratio 1:2

    Answer: 11 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 41, 15, 34, 16, 21, 44, 42. Give your answer to 2 decimal places

    Answer: 30.43