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Cornerstone · Grades 3–5 Keystones #1 24 February 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 24 February 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 3⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 8x - 9 = 111

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Divide 88 in the ratio 3:3:2

    Answer: 33, 33 and 22
  5. 5. Statistics Mean

    Find the mean of: 4, 16, 4

    Answer: 8

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