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

  1. 1. Number Adding fractions

    Calculate: 8⁄12 + 2⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x - 7 = 5

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 3:4

    Answer: 30 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 29, 14, 34, 40, 6, 27, 22, 40

    Answer: 26.5

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