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Cornerstone · Grades 3–5 Keystones #1 28 August 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 28 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

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

    Solve: 4x + 9 = 53

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

    Calculate the hypotenuse when a = 7cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 171 in the ratio 4:4:1

    Answer: 76, 76 and 19
  5. 5. Statistics Mean

    Calculate the mean of: 24, 20, 19, 9, 12, 32, 7. Give your answer to 2 decimal places

    Answer: 17.57

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