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Cornerstone · Grades 3–5 Keystones #1 23 August 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 August 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 19 = 85

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 170 in the ratio 2:2:1

    Answer: 68, 68 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 6, 8, 27, 10, 39, 50, 38. Give your answer to 2 decimal places

    Answer: 25.43

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