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Cornerstone · Grades 3–5 Keystones #1 21 June 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 June 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 4⁄8

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 6x + 4 = 76

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Share 98 in the ratio 4:3

    Answer: 56 and 42
  5. 5. Statistics Mean

    Find the mean of: 16, 9, 20

    Answer: 15

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