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Cornerstone · Grades 3–5 Keystones #1 29 December 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 29 December 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 1⁄6

    Answer: 13⁄24
  2. 2. Algebra Two-step equations

    Solve: 4x - 17 = 7

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 2:1

    Answer: 40 and 20
  5. 5. Statistics Mean

    Find the mean of: 4, 4, 17, 12, 13

    Answer: 10

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