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Cornerstone · Grades 3–5 Keystones #1 25 November 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 25 November 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄12 + 5⁄12

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x + 4 = 88

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.52cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 24, 49, 11, 15, 9, 16. Give your answer to 2 decimal places

    Answer: 20.67

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