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Cornerstone · Grades 3–5 Keystones #1 24 May 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 5⁄7

    Answer: 39⁄35
  2. 2. Algebra Two-step equations

    Solve: 8x - 16 = 48

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

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

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

    Divide 119 in the ratio 2:4:1

    Answer: 34, 68 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 26, 35, 19, 22, 12, 45, 7, 18

    Answer: 23

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