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Cornerstone · Grades 3–5 Keystones #1 12 October 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 12 October 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 1⁄5

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 2x + 15 = 37

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

    Calculate the hypotenuse when a = 6cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 3:1

    Answer: 45 and 15
  5. 5. Statistics Mean

    Find the mean of: 3, 18, 12, 11, 6

    Answer: 10

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