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Cornerstone · Grades 3–5 Keystones #1 2 June 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 June 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 2⁄9

    Answer: 5⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 85

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 119 in the ratio 3:4

    Answer: 51 and 68
  5. 5. Statistics Mean

    Calculate the mean of: 7, 32, 36, 39, 18, 50, 21

    Answer: 29

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