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Cornerstone · Grades 3–5 Keystones #1 28 October 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 28 October 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

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

    Solve: 7x + 9 = 72

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

    Calculate the hypotenuse when a = 3cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 9.49cm
  4. 4. Ratio Sharing in a ratio

    Share 21 in the ratio 2:1

    Answer: 14 and 7
  5. 5. Statistics Mean

    Calculate the mean of: 44, 37, 42, 6, 35, 34, 6, 23. Give your answer to 2 decimal places

    Answer: 28.38

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