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Cornerstone · Grades 3–5 Keystones #1 8 November 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 November 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 1⁄8

    Answer: 1⁄4
  2. 2. Algebra Two-step equations

    Solve: 5x + 3 = 33

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

    Calculate the hypotenuse when a = 3cm and b = 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 75 in the ratio 1:1:3

    Answer: 15, 15 and 45
  5. 5. Statistics Mean

    Find the mean of: 22, 13, 10

    Answer: 15

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