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Cornerstone · Grades 3–5 Keystones #1 27 April 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 27 April 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 7⁄12

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

    Solve: 5x - 20 = 5

    Answer: x = 5
  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

    Divide 189 in the ratio 2:3:4

    Answer: 42, 63 and 84
  5. 5. Statistics Mean

    Find the mean of: 12, 18, 8

    Answer: 12.666666666667

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