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Cornerstone · Grades 3–5 Keystones #1 5 February 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 February 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 5⁄7

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

    Solve: 4x + 10 = 22

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

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 3:2:2

    Answer: 48, 32 and 32
  5. 5. Statistics Mean

    Find the mean of: 4, 8, 12

    Answer: 8

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