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Cornerstone · Grades 3–5 Keystones #1 1 April 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 1 April 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x - 19 = 79

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

    Calculate the hypotenuse when a = 3cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 6.71cm
  4. 4. Ratio Sharing in a ratio

    Divide 240 in the ratio 3:3:4

    Answer: 72, 72 and 96
  5. 5. Statistics Mean

    Find the mean of: 15, 11, 2, 10, 2

    Answer: 8

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