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Cornerstone · Grades 3–5 Keystones #1 6 April 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 6 April 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 2⁄6

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 5x + 9 = 54

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Share 133 in the ratio 3:4

    Answer: 57 and 76
  5. 5. Statistics Mean

    Calculate the mean of: 33, 16, 10, 9, 12, 41. Give your answer to 2 decimal places

    Answer: 20.17

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