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Cornerstone · Grades 3–5 Keystones #1 6 April 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 April 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 5⁄7

    Answer: 39⁄35
  2. 2. Algebra Two-step equations

    Solve: 6x + 13 = 67

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 6.71cm
  4. 4. Ratio Sharing in a ratio

    Share 114 in the ratio 1:2

    Answer: 38 and 76
  5. 5. Statistics Mean

    Calculate the mean of: 45, 18, 22, 32, 40, 12, 30. Give your answer to 2 decimal places

    Answer: 28.43

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