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Cornerstone · Grades 3–5 Keystones #1 14 August 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 14 August 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄12 + 1⁄12

    Answer: 1⁄6
  2. 2. Algebra Two-step equations

    Solve: 6x + 7 = 67

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

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio Sharing in a ratio

    Divide 162 in the ratio 4:2:3

    Answer: 72, 36 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 24, 33, 27, 5, 19, 20. Give your answer to 2 decimal places

    Answer: 21.33

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