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Cornerstone · Grades 3–5 Keystones #1 18 May 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 May 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 2⁄8

    Answer: 17⁄20
  2. 2. Algebra Two-step equations

    Solve: 6x + 11 = 35

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

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

    Share 55 in the ratio 1:4

    Answer: 11 and 44
  5. 5. Statistics Mean

    Find the mean of: 19, 11, 10, 18, 12

    Answer: 14

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