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Cornerstone · Grades 3–5 Keystones #1 10 August 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 August 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄12 + 2⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x + 14 = 35

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 5.66cm
  4. 4. Ratio Sharing in a ratio

    Divide 270 in the ratio 1:4:4

    Answer: 30, 120 and 120
  5. 5. Statistics Mean

    Calculate the mean of: 27, 44, 43, 11, 49, 21, 11. Give your answer to 2 decimal places

    Answer: 29.43

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