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Cornerstone · Grades 3–5 Keystones #1 15 August 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 15 August 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 2⁄7

    Answer: 37⁄56
  2. 2. Algebra Two-step equations

    Solve: 3x - 13 = 20

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 7.62cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 1:4

    Answer: 13 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 15, 22, 41, 13, 30, 9. Give your answer to 2 decimal places

    Answer: 21.67

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