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Cornerstone · Grades 3–5 Keystones #1 20 January 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 1⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 2x - 8 = 20

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 7.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 3:2:2

    Answer: 36, 24 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 7, 20, 34, 41, 17, 49, 16, 17. Give your answer to 2 decimal places

    Answer: 25.13

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