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Cornerstone · Grades 3–5 Keystones #1 27 November 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 27 November 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 3x - 10 = 35

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

    Calculate the hypotenuse when a = 5cm and b = 4cm

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Share 21 in the ratio 1:2

    Answer: 7 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 6, 44, 23, 46, 32, 12

    Answer: 27.2

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