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Cornerstone · Grades 3–5 Keystones #1 22 October 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 22 October 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄8 + 2⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 2x - 15 = 13

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 15.56cm
  4. 4. Ratio Sharing in a ratio

    Divide 171 in the ratio 4:4:1

    Answer: 76, 76 and 19
  5. 5. Statistics Mean

    Calculate the mean of: 35, 10, 26, 40, 43, 5, 36. Give your answer to 2 decimal places

    Answer: 27.86

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