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Cornerstone · Grades 3–5 Keystones #1 29 March 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 29 March 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄12 + 4⁄12

    Answer: 5⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x - 6 = 18

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 14cm

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 1:2:1

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

    Calculate the mean of: 7, 43, 13, 39, 15, 22

    Answer: 23.2

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