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Cornerstone · Grades 3–5 Keystones #1 28 June 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 28 June 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 3⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 7x + 4 = 81

    Answer: x = 11
  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 45 in the ratio 1:2

    Answer: 15 and 30
  5. 5. Statistics Mean

    Find the mean of: 15, 17, 16, 8

    Answer: 14

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