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Cornerstone · Grades 3–5 Keystones #1 13 April 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 13 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 3⁄4

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

    Solve: 6x + 14 = 86

    Answer: x = 12
  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 72 in the ratio 1:3

    Answer: 18 and 54
  5. 5. Statistics Mean

    Find the mean of: 7, 16, 4, 4, 11

    Answer: 8.4

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