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Cornerstone · Grades 3–5 Keystones #1 4 July 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 July 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 6⁄8

    Answer: 37⁄28
  2. 2. Algebra Two-step equations

    Solve: 7x + 6 = 27

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

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 1:4:1

    Answer: 24, 96 and 24
  5. 5. Statistics Mean

    Find the mean of: 10, 9, 9, 16

    Answer: 11

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