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Cornerstone · Grades 3–5 Keystones #1 24 August 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 24 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 2⁄11

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

    Solve: 7x - 10 = 53

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 3:2

    Answer: 42 and 28
  5. 5. Statistics Mean

    Find the mean of: 19, 8, 14, 19

    Answer: 15

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