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Cornerstone · Grades 3–5 Keystones #1 24 May 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 24 May 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 7x + 15 = 99

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 231 in the ratio 4:4:3

    Answer: 84, 84 and 63
  5. 5. Statistics Mean

    Calculate the mean of: 8, 26, 41, 42, 20, 29, 7, 27

    Answer: 25

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