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Cornerstone · Grades 3–5 Keystones #1 22 July 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 22 July 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 1⁄5

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

    Solve: 7x + 5 = 40

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.52cm
  4. 4. Ratio Sharing in a ratio

    Share 102 in the ratio 1:2

    Answer: 34 and 68
  5. 5. Statistics Mean

    Calculate the mean of: 34, 29, 48, 17, 19, 23, 45. Give your answer to 2 decimal places

    Answer: 30.71

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