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Cornerstone · Grades 3–5 Keystones #1 14 October 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 14 October 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 7x - 17 = 32

    Answer: x = 7
  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

    Divide 114 in the ratio 3:2:1

    Answer: 57, 38 and 19
  5. 5. Statistics Mean

    Find the mean of: 3, 20, 6, 3, 13

    Answer: 9

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