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Cornerstone · Grades 3–5 Keystones #1 21 December 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 December 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 1⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 2x - 16 = 14

    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 20 in the ratio 1:3

    Answer: 5 and 15
  5. 5. Statistics Mean

    Find the mean of: 10, 15, 17

    Answer: 14

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