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Cornerstone · Grades 3–5 Keystones #1 4 November 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 4 November 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄12 + 2⁄12

    Answer: 1⁄3
  2. 2. Algebra Two-step equations

    Solve: 4x - 19 = 1

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

    Calculate the hypotenuse when a = 9cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Share 84 in the ratio 1:2

    Answer: 28 and 56
  5. 5. Statistics Mean

    Calculate the mean of: 43, 29, 37, 25, 38, 48, 15. Give your answer to 2 decimal places

    Answer: 33.57

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