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Cornerstone · Grades 3–5 Keystones #1 27 March 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 March 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄11 + 2⁄11

    Answer: 6⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x + 3 = 18

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

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

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

    Share 95 in the ratio 1:4

    Answer: 19 and 76
  5. 5. Statistics Mean

    Calculate the mean of: 30, 6, 7, 9, 39, 14, 34, 20

    Answer: 19.9

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