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Cornerstone · Grades 3–5 Keystones #1 27 March 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 March 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 3⁄4

    Answer: 37⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x - 18 = 27

    Answer: x = 9
  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 60 in the ratio 1:4

    Answer: 12 and 48
  5. 5. Statistics Mean

    Find the mean of: 17, 21, 13, 9

    Answer: 15

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