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Cornerstone · Grades 3–5 Keystones #1 4 December 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 December 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 5⁄8

    Answer: 9⁄8
  2. 2. Algebra Two-step equations

    Solve: 6x + 7 = 73

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 100 in the ratio 3:2

    Answer: 60 and 40
  5. 5. Statistics Mean

    Find the mean of: 12, 2, 4

    Answer: 6

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