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

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x - 15 = 15

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 98 in the ratio 2:1:4

    Answer: 28, 14 and 56
  5. 5. Statistics Mean

    Calculate the mean of: 42, 28, 21, 42, 25, 35, 31

    Answer: 32

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