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Cornerstone · Grades 3–5 Keystones #1 20 November 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 November 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄11 + 4⁄11

    Answer: 7⁄11
  2. 2. Algebra Two-step equations

    Solve: 4x - 9 = 27

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 5cm

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Divide 136 in the ratio 1:3:4

    Answer: 17, 51 and 68
  5. 5. Statistics Mean

    Find the mean of: 3, 4, 6, 14, 5

    Answer: 6.4

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