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

Five GCSE retrieval questions · 5 February 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 1⁄7

    Answer: 3⁄7
  2. 2. Algebra Two-step equations

    Solve: 3x - 20 = 1

    Answer: x = 7
  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

    Divide 98 in the ratio 1:4:2

    Answer: 14, 56 and 28
  5. 5. Statistics Mean

    Find the mean of: 6, 4, 5, 5

    Answer: 5

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