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Cornerstone · Grades 3–5 Keystones #1 9 November 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 9 November 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 2⁄9

    Answer: 1⁄3
  2. 2. Algebra Two-step equations

    Solve: 2x + 12 = 28

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

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 130 in the ratio 3:3:4

    Answer: 39, 39 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 26, 6, 32, 42, 49, 15, 39, 36. Give your answer to 2 decimal places

    Answer: 30.63

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