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Cornerstone · Grades 3–5 Keystones #1 29 March 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 March 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 1⁄8

    Answer: 55⁄56
  2. 2. Algebra Two-step equations

    Solve: 3x + 14 = 35

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

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

    Divide 88 in the ratio 3:1:4

    Answer: 33, 11 and 44
  5. 5. Statistics Mean

    Find the mean of: 13, 19, 4

    Answer: 12

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