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Cornerstone · Grades 3–5 Keystones #1 25 October 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 25 October 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

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

    Solve: 8x - 17 = 95

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 120 in the ratio 1:2

    Answer: 40 and 80
  5. 5. Statistics Mean

    Calculate the mean of: 5, 5, 9, 38, 34, 29, 22

    Answer: 20.3

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