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Cornerstone · Grades 3–5 Keystones #1 15 February 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 15 February 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄9 + 2⁄9

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 7x - 6 = 99

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 16.12cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 1:4:4

    Answer: 14, 56 and 56
  5. 5. Statistics Mean

    Calculate the mean of: 49, 42, 37, 40, 14, 24, 12, 21. Give your answer to 2 decimal places

    Answer: 29.88

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