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Cornerstone · Grades 3–5 Keystones #1 26 November 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 26 November 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 3⁄8

    Answer: 45⁄56
  2. 2. Algebra Two-step equations

    Solve: 6x + 10 = 28

    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

    Divide 130 in the ratio 4:3:3

    Answer: 52, 39 and 39
  5. 5. Statistics Mean

    Calculate the mean of: 33, 14, 13, 36, 36, 13

    Answer: 24.2

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