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Cornerstone · Grades 3–5 Keystones #1 2 April 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 April 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 5⁄8

    Answer: 23⁄24
  2. 2. Algebra Two-step equations

    Solve: 2x - 13 = 7

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 70 in the ratio 3:3:1

    Answer: 30, 30 and 10
  5. 5. Statistics Mean

    Find the mean of: 6, 11, 13, 6

    Answer: 9

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