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Cornerstone · Grades 3–5 Keystones #1 31 July 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 31 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 3⁄9

    Answer: 5⁄9
  2. 2. Algebra Two-step equations

    Solve: 5x - 20 = 50

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

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 120 in the ratio 1:2

    Answer: 40 and 80
  5. 5. Statistics Mean

    Find the mean of: 9, 4, 3

    Answer: 5.3333333333333

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