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Cornerstone · Grades 3–5 Keystones #1 4 June 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 4 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 4x + 5 = 53

    Answer: x = 12
  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 65 in the ratio 3:2

    Answer: 39 and 26
  5. 5. Statistics Mean

    Find the mean of: 1, 13, 10, 12

    Answer: 9

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