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Cornerstone · Grades 3–5 Keystones #1 22 November 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 22 November 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 1⁄6

    Answer: 5⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 92

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 3:4:2

    Answer: 48, 64 and 32
  5. 5. Statistics Mean

    Find the mean of: 5, 4, 3, 14, 19

    Answer: 9

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