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

Five GCSE retrieval questions · 1 March 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 4⁄9

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

    Solve: 6x + 9 = 51

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 49 in the ratio 4:3

    Answer: 28 and 21
  5. 5. Statistics Mean

    Find the mean of: 3, 23, 4

    Answer: 10

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