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Cornerstone · Grades 3–5 Keystones #1 16 May 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 2⁄8

    Answer: 11⁄28
  2. 2. Algebra Two-step equations

    Solve: 2x - 10 = 12

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 17.03cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 3:1

    Answer: 30 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 28, 32, 11, 24, 35, 36, 23

    Answer: 27

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