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Cornerstone · Grades 3–5 Keystones #1 2 November 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 2 November 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄8 + 2⁄8

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

    Solve: 3x + 7 = 34

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 4:1:3

    Answer: 48, 12 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 27, 35, 26, 18, 15, 50, 17, 37. Give your answer to 2 decimal places

    Answer: 28.13

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