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Cornerstone · Grades 3–5 Keystones #1 19 December 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 19 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 3⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 7x - 15 = 48

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 90 in the ratio 2:4:3

    Answer: 20, 40 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 33, 41, 50, 23, 28, 46

    Answer: 36.8

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