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Cornerstone · Grades 3–5 Keystones #1 3 May 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄11 + 3⁄11

    Answer: 7⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 19 = 77

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 7.81cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 2:1

    Answer: 30 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 36, 50, 33, 5, 38, 49, 5. Give your answer to 2 decimal places

    Answer: 30.86

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