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Cornerstone · Grades 3–5 Keystones #1 5 October 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 October 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 5⁄8

    Answer: 11⁄8
  2. 2. Algebra Two-step equations

    Solve: 3x + 11 = 29

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 3:1:3

    Answer: 36, 12 and 36
  5. 5. Statistics Mean

    Find the mean of: 11, 4, 6

    Answer: 7

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