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Cornerstone · Grades 3–5 Keystones #1 27 January 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 January 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 8x - 17 = 87

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

    Calculate the hypotenuse when a = 4cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Divide 90 in the ratio 1:3:2

    Answer: 15, 45 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 37, 30, 11, 37, 45, 8, 16. Give your answer to 2 decimal places

    Answer: 26.29

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