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Cornerstone · Grades 3–5 Keystones #1 27 October 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 27 October 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 51

    Answer: x = 11
  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 198 in the ratio 2:3:4

    Answer: 44, 66 and 88
  5. 5. Statistics Mean

    Find the mean of: 5, 25, 6, 20

    Answer: 14

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