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Cornerstone · Grades 3–5 Keystones #1 27 August 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 27 August 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄12 + 2⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 8x - 13 = 51

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 52 in the ratio 3:1

    Answer: 39 and 13
  5. 5. Statistics Mean

    Find the mean of: 8, 10, 21

    Answer: 13

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