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Cornerstone · Grades 3–5 Keystones #1 2 May 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 May 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x + 15 = 63

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

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

    Answer: 14.14cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 4:1:1

    Answer: 112, 28 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 45, 28, 31, 7, 14, 39, 29, 10. Give your answer to 2 decimal places

    Answer: 25.38

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