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Cornerstone · Grades 3–5 Keystones #1 28 November 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 28 November 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 4⁄5

    Answer: 48⁄35
  2. 2. Algebra Two-step equations

    Solve: 4x - 10 = 38

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 210 in the ratio 2:4:1

    Answer: 60, 120 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 37, 23, 31, 25, 31, 20, 6. Give your answer to 2 decimal places

    Answer: 24.71

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