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Cornerstone · Grades 3–5 Keystones #1 27 December 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 December 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 1⁄5

    Answer: 27⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x + 8 = 63

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.73cm
  4. 4. Ratio Sharing in a ratio

    Divide 119 in the ratio 3:2:2

    Answer: 51, 34 and 34
  5. 5. Statistics Mean

    Find the mean of: 15, 2, 9, 21, 8

    Answer: 11

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