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Cornerstone · Grades 3–5 Keystones #1 17 June 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 17 June 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 1⁄6

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

    Solve: 2x - 15 = 7

    Answer: x = 11
  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 140 in the ratio 1:2:2

    Answer: 28, 56 and 56
  5. 5. Statistics Mean

    Calculate the mean of: 22, 14, 28, 6, 23, 33, 22

    Answer: 21.1

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