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

  1. 1. Number Adding fractions

    Calculate: 2⁄12 + 4⁄12

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 5x + 15 = 65

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 11cm

    Answer: 16.28cm
  4. 4. Ratio Sharing in a ratio

    Share 39 in the ratio 1:2

    Answer: 13 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 17, 27, 42, 14, 15, 36, 23

    Answer: 24.9

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