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Cornerstone · Grades 3–5 Keystones #1 21 October 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 21 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 3⁄10

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x - 16 = 54

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Share 57 in the ratio 1:2

    Answer: 19 and 38
  5. 5. Statistics Mean

    Find the mean of: 14, 13, 2, 4, 7

    Answer: 8

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