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Cornerstone · Grades 3–5 Keystones #1 17 November 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 17 November 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄12 + 4⁄12

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

    Solve: 6x + 6 = 54

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Divide 90 in the ratio 2:3:4

    Answer: 20, 30 and 40
  5. 5. Statistics Mean

    Find the mean of: 13, 19, 17, 8, 2

    Answer: 11.8

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