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Cornerstone · Grades 3–5 Keystones #1 26 July 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 July 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 4⁄8

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x - 12 = 24

    Answer: x = 12
  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 130 in the ratio 1:1:3

    Answer: 26, 26 and 78
  5. 5. Statistics Mean

    Find the mean of: 8, 5, 14

    Answer: 9

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