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Cornerstone · Grades 3–5 Keystones #1 25 June 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 June 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 3⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x - 12 = 38

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 10cm

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Divide 207 in the ratio 4:1:4

    Answer: 92, 23 and 92
  5. 5. Statistics Mean

    Calculate the mean of: 14, 6, 9, 30, 8, 39, 37

    Answer: 20.4

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