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Cornerstone · Grades 3–5 Keystones #1 16 February 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 February 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 1⁄10

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 2x + 14 = 26

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 5cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 68 in the ratio 1:3

    Answer: 17 and 51
  5. 5. Statistics Mean

    Find the mean of: 3, 14, 19, 7, 17

    Answer: 12

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