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Cornerstone · Grades 3–5 Keystones #1 6 August 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 3⁄6

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 6x - 17 = 31

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Divide 105 in the ratio 3:1:1

    Answer: 63, 21 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 14, 47, 40, 22, 37, 49, 24, 6. Give your answer to 2 decimal places

    Answer: 29.88

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