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Cornerstone · Grades 3–5 Keystones #1 13 January 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 January 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 2⁄3

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 8x - 14 = 18

    Answer: x = 4
  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

    Share 108 in the ratio 1:2

    Answer: 36 and 72
  5. 5. Statistics Mean

    Find the mean of: 9, 11, 19

    Answer: 13

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