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

Five GCSE retrieval questions · 1 July 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 1⁄9

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

    Solve: 3x - 8 = 4

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

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

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

    Share 95 in the ratio 3:2

    Answer: 57 and 38
  5. 5. Statistics Mean

    Find the mean of: 13, 16, 10

    Answer: 13

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