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Cornerstone · Grades 3–5 Keystones #1 24 October 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 24 October 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 6⁄10

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

    Solve: 7x - 9 = 40

    Answer: x = 7
  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 290 in the ratio 4:3:3

    Answer: 116, 87 and 87
  5. 5. Statistics Mean

    Find the mean of: 18, 7, 5, 2

    Answer: 8

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