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Cornerstone · Grades 3–5 Keystones #1 21 April 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 21 April 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄8 + 1⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 7x - 9 = 96

    Answer: x = 15
  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 21 in the ratio 1:2

    Answer: 7 and 14
  5. 5. Statistics Mean

    Find the mean of: 11, 11, 16, 6

    Answer: 11

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