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Cornerstone · Grades 3–5 Keystones #1 10 August 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 August 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 5⁄6

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

    Solve: 6x - 16 = 44

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Divide 91 in the ratio 3:3:1

    Answer: 39, 39 and 13
  5. 5. Statistics Mean

    Calculate the mean of: 28, 38, 43, 44, 36, 33, 23

    Answer: 35

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