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Cornerstone · Grades 3–5 Keystones #1 17 December 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 December 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 3⁄4

    Answer: 5⁄4
  2. 2. Algebra Two-step equations

    Solve: 3x - 13 = 8

    Answer: x = 7
  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

    Divide 210 in the ratio 2:3:2

    Answer: 60, 90 and 60
  5. 5. Statistics Mean

    Find the mean of: 9, 16, 10, 9

    Answer: 11

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