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Cornerstone · Grades 3–5 Keystones #1 23 November 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 November 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 5⁄6

    Answer: 3⁄2
  2. 2. Algebra Two-step equations

    Solve: 3x - 9 = 18

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 234 in the ratio 2:4:3

    Answer: 52, 104 and 78
  5. 5. Statistics Mean

    Calculate the mean of: 15, 44, 31, 38, 40, 21, 12. Give your answer to 2 decimal places

    Answer: 28.71

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