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Cornerstone · Grades 3–5 Keystones #1 10 May 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 May 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄12 + 5⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x + 15 = 27

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

    Calculate the hypotenuse when a = 8cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Share 33 in the ratio 1:2

    Answer: 11 and 22
  5. 5. Statistics Mean

    Find the mean of: 13, 19, 2, 19, 12

    Answer: 13

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