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Cornerstone · Grades 3–5 Keystones #1 20 December 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 20 December 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x - 14 = 61

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 5.66cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 5, 15, 23, 23, 48, 11. Give your answer to 2 decimal places

    Answer: 20.83

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