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

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

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 2⁄10

    Answer: 3⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x - 5 = 37

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 152 in the ratio 3:2:3

    Answer: 57, 38 and 57
  5. 5. Statistics Mean

    Find the mean of: 13, 15, 15, 9

    Answer: 13

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