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

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 4⁄12

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x - 5 = 40

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 4cm

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics Mean

    Find the mean of: 13, 4, 11, 10, 20

    Answer: 11.6

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