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Cornerstone · Grades 3–5 Keystones #1 29 July 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 29 July 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 1⁄5

    Answer: 13⁄15
  2. 2. Algebra Two-step equations

    Solve: 2x - 14 = 14

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 7.21cm
  4. 4. Ratio Sharing in a ratio

    Share 25 in the ratio 1:4

    Answer: 5 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 29, 49, 15, 26, 47, 41, 6, 24. Give your answer to 2 decimal places

    Answer: 29.63

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