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Cornerstone · Grades 3–5 Keystones #1 2 July 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 July 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 5⁄6

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

    Solve: 8x - 11 = 85

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 4:1

    Answer: 48 and 12
  5. 5. Statistics Mean

    Find the mean of: 18, 19, 15, 5, 3

    Answer: 12

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