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Cornerstone · Grades 3–5 Keystones #1 31 October 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 October 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄9 + 4⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 4x + 14 = 42

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 91 in the ratio 3:4

    Answer: 39 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 39, 45, 24, 26, 38, 8

    Answer: 30

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