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Cornerstone · Grades 3–5 Keystones #1 14 October 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 14 October 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 2⁄10

    Answer: 2⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x + 3 = 15

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

    Calculate the hypotenuse when a = 10cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Share 133 in the ratio 4:3

    Answer: 76 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 16, 15, 26, 30, 48, 44, 6. Give your answer to 2 decimal places

    Answer: 26.43

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