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Cornerstone · Grades 3–5 Keystones #1 14 December 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 14 December 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 3x + 11 = 29

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Share 54 in the ratio 2:1

    Answer: 36 and 18
  5. 5. Statistics Mean

    Find the mean of: 16, 6, 10, 19

    Answer: 12.75

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