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Cornerstone · Grades 3–5 Keystones #1 15 October 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 15 October 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 3⁄6

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

    Solve: 2x + 15 = 31

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 1:2:1

    Answer: 24, 48 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 9, 10, 32, 42, 15, 29, 41. Give your answer to 2 decimal places

    Answer: 25.43

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