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Cornerstone · Grades 3–5 Keystones #1 17 April 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 6x + 13 = 31

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

    Calculate the hypotenuse when a = 5cm and b = 15cm

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 147 in the ratio 2:4:1

    Answer: 42, 84 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 24, 17, 41, 13, 13, 31, 28, 43

    Answer: 26.3

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