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Cornerstone · Grades 3–5 Keystones #1 11 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 5⁄12

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

    Solve: 6x - 15 = 27

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 5cm

    Answer: 7.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 133 in the ratio 2:2:3

    Answer: 38, 38 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 35, 37, 43, 47, 28, 24, 11

    Answer: 32.1

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