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Cornerstone · Grades 3–5 Keystones #1 2 November 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 November 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 1⁄4

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

    Solve: 4x - 17 = 31

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

    Calculate the hypotenuse when a = 11cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.6cm
  4. 4. Ratio Sharing in a ratio

    Share 133 in the ratio 4:3

    Answer: 76 and 57
  5. 5. Statistics Mean

    Find the mean of: 7, 2, 14, 9

    Answer: 8

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