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Cornerstone · Grades 3–5 Keystones #1 6 November 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 6 November 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 5x + 10 = 55

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

    Calculate the hypotenuse when a = 4cm and b = 11cm

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 4:3:2

    Answer: 60, 45 and 30
  5. 5. Statistics Mean

    Find the mean of: 20, 3, 17, 6, 19

    Answer: 13

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