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Cornerstone · Grades 3–5 Keystones #1 1 November 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 November 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x - 15 = 62

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 126 in the ratio 3:4

    Answer: 54 and 72
  5. 5. Statistics Mean

    Find the mean of: 10, 13, 2, 11, 4

    Answer: 8

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