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Cornerstone · Grades 3–5 Keystones #1 23 April 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 23 April 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 1⁄10

    Answer: 1⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x + 13 = 57

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 174 in the ratio 2:3:1

    Answer: 58, 87 and 29
  5. 5. Statistics Mean

    Find the mean of: 19, 10, 2, 17

    Answer: 12

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