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

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

  1. 1. Number Adding fractions

    Add: 6⁄7 + 1⁄3

    Answer: 25⁄21
  2. 2. Algebra Two-step equations

    Solve: 8x - 14 = 74

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

    Calculate the hypotenuse when a = 3cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 192 in the ratio 1:1:2

    Answer: 48, 48 and 96
  5. 5. Statistics Mean

    Calculate the mean of: 32, 26, 29, 38, 14, 25. Give your answer to 2 decimal places

    Answer: 27.33

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