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Cornerstone · Grades 3–5 Keystones #1 16 December 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 December 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 1⁄6

    Answer: 19⁄42
  2. 2. Algebra Two-step equations

    Solve: 2x - 7 = 7

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

    Calculate the hypotenuse when a = 12cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Divide 114 in the ratio 1:3:2

    Answer: 19, 57 and 38
  5. 5. Statistics Mean

    Calculate the mean of: 28, 23, 33, 13, 35, 41, 9

    Answer: 26

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