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Cornerstone · Grades 3–5 Keystones #1 14 March 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 March 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 1⁄7

    Answer: 17⁄21
  2. 2. Algebra Two-step equations

    Solve: 2x - 17 = 13

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 2:3

    Answer: 18 and 27
  5. 5. Statistics Mean

    Find the mean of: 7, 13, 5, 23

    Answer: 12

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