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Cornerstone · Grades 3–5 Keystones #1 27 August 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 August 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 6⁄7

    Answer: 19⁄14
  2. 2. Algebra Two-step equations

    Solve: 2x + 6 = 12

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 114 in the ratio 2:1

    Answer: 76 and 38
  5. 5. Statistics Mean

    Find the mean of: 6, 17, 17, 12

    Answer: 13

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