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Cornerstone · Grades 3–5 Keystones #1 4 July 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 4 July 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 2⁄9

    Answer: 5⁄9
  2. 2. Algebra Two-step equations

    Solve: 6x - 16 = 50

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

    Calculate the hypotenuse when a = 8cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Share 28 in the ratio 3:1

    Answer: 21 and 7
  5. 5. Statistics Mean

    Calculate the mean of: 23, 25, 11, 26, 31, 41, 21. Give your answer to 2 decimal places

    Answer: 25.43

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