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Cornerstone · Grades 3–5 Keystones #1 12 January 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 January 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 1⁄6

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

    Solve: 3x - 16 = -1

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

    Calculate the hypotenuse when a = 5cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Share 55 in the ratio 3:2

    Answer: 33 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 25, 10, 19, 48, 7, 31, 9. Give your answer to 2 decimal places

    Answer: 21.29

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