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Cornerstone · Grades 3–5 Keystones #1 10 August 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 2⁄9

    Answer: 1⁄3
  2. 2. Algebra Two-step equations

    Solve: 2x - 7 = 5

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

    Calculate the hypotenuse when a = 9cm and b = 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 330 in the ratio 4:3:4

    Answer: 120, 90 and 120
  5. 5. Statistics Mean

    Calculate the mean of: 18, 27, 48, 9, 37, 35

    Answer: 29

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