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Cornerstone · Grades 3–5 Keystones #1 17 April 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 April 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄4

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

    Solve: 5x + 13 = 28

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

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 1:3:1

    Answer: 28, 84 and 28
  5. 5. Statistics Mean

    Find the mean of: 20, 4, 2, 18

    Answer: 11

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