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Cornerstone · Grades 3–5 Keystones #1 28 November 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 28 November 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

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

    Solve: 8x - 6 = 114

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 13cm

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 2:3

    Answer: 20 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 36, 13, 11, 22, 20, 24, 5

    Answer: 18.7

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