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

Five GCSE retrieval questions · 3 April 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 5⁄6

    Answer: 53⁄42
  2. 2. Algebra Two-step equations

    Solve: 8x - 20 = 76

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 2:3

    Answer: 32 and 48
  5. 5. Statistics Mean

    Find the mean of: 9, 11, 9, 7, 19

    Answer: 11

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