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Cornerstone · Grades 3–5 Keystones #1 11 February 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 11 February 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 4⁄6

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

    Solve: 7x - 16 = 54

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

    Calculate the hypotenuse when a = 7cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Divide 270 in the ratio 4:1:4

    Answer: 120, 30 and 120
  5. 5. Statistics Mean

    Calculate the mean of: 48, 29, 33, 40, 19, 30, 23. Give your answer to 2 decimal places

    Answer: 31.71

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