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Cornerstone · Grades 3–5 Keystones #1 27 October 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 27 October 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x + 6 = 56

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

    Calculate the hypotenuse when a = 3cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.34cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 3:2

    Answer: 42 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 48, 34, 29, 31, 19, 17, 37. Give your answer to 2 decimal places

    Answer: 30.71

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