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Cornerstone · Grades 3–5 Keystones #1 24 January 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 24 January 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 1⁄4

    Answer: 19⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x - 6 = 24

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 16.97cm
  4. 4. Ratio Sharing in a ratio

    Divide 270 in the ratio 3:4:3

    Answer: 81, 108 and 81
  5. 5. Statistics Mean

    Calculate the mean of: 15, 16, 43, 44, 31, 19, 24. Give your answer to 2 decimal places

    Answer: 27.43

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