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Cornerstone · Grades 3–5 Keystones #1 27 June 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 27 June 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 4⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x + 8 = 22

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 10cm

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 1:2:1

    Answer: 27, 54 and 27
  5. 5. Statistics Mean

    Calculate the mean of: 8, 43, 7, 26, 47, 49, 37, 10

    Answer: 28.4

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