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Cornerstone · Grades 3–5 Keystones #1 6 November 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 6 November 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 1⁄10

    Answer: 3⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x + 3 = 33

    Answer: x = 6
  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 49 in the ratio 3:4

    Answer: 21 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 16, 18, 38, 37, 8, 39, 50, 36

    Answer: 30.3

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