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Cornerstone · Grades 3–5 Keystones #1 12 May 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄12 + 4⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 8x - 13 = 51

    Answer: x = 8
  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

    Divide 240 in the ratio 1:3:4

    Answer: 30, 90 and 120
  5. 5. Statistics Mean

    Find the mean of: 3, 7, 7, 15

    Answer: 8

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