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

  1. 1. Number Adding fractions

    Add: 4⁄5 + 4⁄6

    Answer: 22⁄15
  2. 2. Algebra Two-step equations

    Solve: 6x + 11 = 71

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 130 in the ratio 2:2:1

    Answer: 52, 52 and 26
  5. 5. Statistics Mean

    Find the mean of: 19, 18, 11, 19, 3

    Answer: 14

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