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Cornerstone · Grades 3–5 Keystones #1 23 July 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 July 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 1⁄12

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

    Solve: 2x - 11 = 5

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.55cm
  4. 4. Ratio Sharing in a ratio

    Divide 280 in the ratio 4:3:3

    Answer: 112, 84 and 84
  5. 5. Statistics Mean

    Calculate the mean of: 18, 13, 16, 5, 20, 32, 12. Give your answer to 2 decimal places

    Answer: 16.57

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