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Cornerstone · Grades 3–5 Keystones #1 17 October 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 17 October 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 6⁄9

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

    Solve: 5x - 16 = 34

    Answer: x = 10
  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

    Divide 72 in the ratio 2:1:3

    Answer: 24, 12 and 36
  5. 5. Statistics Mean

    Find the mean of: 6, 10, 10, 14, 14

    Answer: 10.8

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