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Cornerstone · Grades 3–5 Keystones #1 3 November 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 3 November 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 6x - 8 = 40

    Answer: x = 8
  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 1:2:2

    Answer: 46, 92 and 92
  5. 5. Statistics Mean

    Calculate the mean of: 37, 11, 42, 30, 11, 31

    Answer: 27

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