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Cornerstone · Grades 3–5 Keystones #1 28 August 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 28 August 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 3⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 8x - 18 = 22

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 72 in the ratio 1:3

    Answer: 18 and 54
  5. 5. Statistics Mean

    Find the mean of: 12, 16, 2, 11, 19

    Answer: 12

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