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Cornerstone · Grades 3–5 Keystones #1 6 May 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 May 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 1⁄4

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

    Solve: 6x + 11 = 71

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 133 in the ratio 3:4

    Answer: 57 and 76
  5. 5. Statistics Mean

    Find the mean of: 12, 19, 17, 9, 13

    Answer: 14

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