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Cornerstone · Grades 3–5 Keystones #1 15 May 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 15 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 6x + 7 = 73

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.52cm
  4. 4. Ratio Sharing in a ratio

    Divide 60 in the ratio 1:3:1

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

    Find the mean of: 2, 11, 8

    Answer: 7

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