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Cornerstone · Grades 3–5 Keystones #1 19 December 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 4⁄5

    Answer: 48⁄35
  2. 2. Algebra Two-step equations

    Solve: 2x + 5 = 11

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 27 in the ratio 1:2

    Answer: 9 and 18
  5. 5. Statistics Mean

    Find the mean of: 25, 20, 2, 5

    Answer: 13

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