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Cornerstone · Grades 3–5 Keystones #1 21 October 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 October 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 6⁄7

    Answer: 31⁄28
  2. 2. Algebra Two-step equations

    Solve: 2x + 5 = 23

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

    Calculate the hypotenuse when a = 4cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics Mean

    Find the mean of: 6, 13, 14

    Answer: 11

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