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Cornerstone · Grades 3–5 Keystones #1 29 February 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 29 February 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 5⁄8

    Answer: 57⁄40
  2. 2. Algebra Two-step equations

    Solve: 7x + 3 = 66

    Answer: x = 9
  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 100 in the ratio 3:2

    Answer: 60 and 40
  5. 5. Statistics Mean

    Find the mean of: 7, 3, 7, 3, 20

    Answer: 8

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