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Cornerstone · Grades 3–5 Keystones #1 19 April 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 19 April 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x + 14 = 32

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

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 95 in the ratio 1:4

    Answer: 19 and 76
  5. 5. Statistics Mean

    Find the mean of: 7, 12, 6, 3

    Answer: 7

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