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Cornerstone · Grades 3–5 Keystones #1 19 November 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 19 November 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 3⁄6

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

    Solve: 2x - 15 = 1

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 55 in the ratio 1:2:2

    Answer: 11, 22 and 22
  5. 5. Statistics Mean

    Find the mean of: 2, 15, 14, 17, 17

    Answer: 13

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