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Cornerstone · Grades 3–5 Keystones #1 28 October 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 October 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 4⁄6

    Answer: 32⁄21
  2. 2. Algebra Two-step equations

    Solve: 5x - 15 = 60

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 147 in the ratio 3:1:3

    Answer: 63, 21 and 63
  5. 5. Statistics Mean

    Find the mean of: 19, 8, 6

    Answer: 11

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