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Cornerstone · Grades 3–5 Keystones #1 23 February 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 23 February 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 2x - 8 = 0

    Answer: x = 4
  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

    Divide 230 in the ratio 4:3:3

    Answer: 92, 69 and 69
  5. 5. Statistics Mean

    Calculate the mean of: 27, 14, 33, 31, 38, 13, 17

    Answer: 24.7

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