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Cornerstone · Grades 3–5 Keystones #1 28 July 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 28 July 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 3⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x - 5 = 72

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 8.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 216 in the ratio 4:4:1

    Answer: 96, 96 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 33, 8, 20, 45, 41, 23, 30. Give your answer to 2 decimal places

    Answer: 28.57

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