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Cornerstone · Grades 3–5 Keystones #1 6 April 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 April 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 2⁄4

    Answer: 17⁄14
  2. 2. Algebra Two-step equations

    Solve: 7x - 5 = 44

    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 242 in the ratio 3:4:4

    Answer: 66, 88 and 88
  5. 5. Statistics Mean

    Find the mean of: 8, 3, 5, 12

    Answer: 7

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