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Cornerstone · Grades 3–5 Keystones #1 12 February 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 12 February 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 1⁄8

    Answer: 1⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x - 16 = 12

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 264 in the ratio 4:4:3

    Answer: 96, 96 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 28, 39, 14, 33, 36, 34, 28, 15. Give your answer to 2 decimal places

    Answer: 28.38

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