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Cornerstone · Grades 3–5 Keystones #1 23 October 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 October 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 2⁄6

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 6x - 6 = 54

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

    Calculate the hypotenuse when a = 4cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 2:3

    Answer: 14 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 40, 29, 34, 41, 44, 38, 16. Give your answer to 2 decimal places

    Answer: 34.57

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