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Cornerstone · Grades 3–5 Keystones #1 9 November 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 9 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x + 4 = 24

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 7cm

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 2:1:1

    Answer: 80, 40 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 13, 19, 5, 32, 6, 40, 28, 26

    Answer: 21.1

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