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

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 5⁄9

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

    Solve: 2x + 14 = 20

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

    Calculate the hypotenuse when a = 5cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 7.07cm
  4. 4. Ratio Sharing in a ratio

    Share 66 in the ratio 2:1

    Answer: 44 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 49, 20, 34, 11, 6, 48, 44, 40

    Answer: 31.5

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