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Cornerstone · Grades 3–5 Keystones #1 11 July 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 11 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

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

    Solve: 8x - 12 = 100

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

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 55 in the ratio 1:4

    Answer: 11 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 33, 33, 43, 50, 8, 19, 48, 30

    Answer: 33

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