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Cornerstone · Grades 3–5 Keystones #1 21 January 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 January 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 2⁄8

    Answer: 5⁄12
  2. 2. Algebra Two-step equations

    Solve: 8x - 14 = 98

    Answer: x = 14
  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

    Share 30 in the ratio 1:4

    Answer: 6 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 26, 29, 26, 45, 28, 27, 19, 17. Give your answer to 2 decimal places

    Answer: 27.13

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