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Cornerstone · Grades 3–5 Keystones #1 4 November 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 November 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 5⁄6

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 5x + 5 = 30

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.54cm
  4. 4. Ratio Sharing in a ratio

    Share 91 in the ratio 3:4

    Answer: 39 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 26, 39, 33, 22, 19, 7, 25. Give your answer to 2 decimal places

    Answer: 24.43

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