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Cornerstone · Grades 3–5 Keystones #1 18 July 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 July 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄7

    Answer: 20⁄21
  2. 2. Algebra Two-step equations

    Solve: 3x - 9 = 30

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 9.49cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics Mean

    Find the mean of: 14, 10, 3, 5

    Answer: 8

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