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Cornerstone · Grades 3–5 Keystones #1 24 October 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 24 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 1⁄7

    Answer: 3⁄7
  2. 2. Algebra Two-step equations

    Solve: 6x + 7 = 67

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

    Calculate the hypotenuse when a = 8cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 2:2:1

    Answer: 54, 54 and 27
  5. 5. Statistics Mean

    Find the mean of: 4, 25, 8, 15

    Answer: 13

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