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Cornerstone · Grades 3–5 Keystones #1 23 December 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 2⁄4

    Answer: 19⁄14
  2. 2. Algebra Two-step equations

    Solve: 5x + 15 = 40

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 96 in the ratio 1:2

    Answer: 32 and 64
  5. 5. Statistics Mean

    Calculate the mean of: 22, 17, 33, 46, 33, 41, 25

    Answer: 31

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