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Cornerstone · Grades 3–5 Keystones #1 12 November 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 12 November 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 3⁄6

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

    Solve: 2x + 6 = 24

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Share 75 in the ratio 4:1

    Answer: 60 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 23, 23, 17, 12, 44, 14. Give your answer to 2 decimal places

    Answer: 22.17

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