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Cornerstone · Grades 3–5 Keystones #1 12 April 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 April 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 1⁄5

    Answer: 27⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x + 8 = 33

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics Mean

    Find the mean of: 14, 13, 15, 16, 17

    Answer: 15

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