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

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

  1. 1. Number Adding fractions

    Add: 3⁄5 + 4⁄7

    Answer: 41⁄35
  2. 2. Algebra Two-step equations

    Solve: 6x - 19 = 11

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 3:2

    Answer: 24 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 34, 22, 28, 30, 7, 20, 37, 38

    Answer: 27

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