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Cornerstone · Grades 3–5 Keystones #1 23 December 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 23 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 3⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x - 12 = 48

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 150 in the ratio 3:1:2

    Answer: 75, 25 and 50
  5. 5. Statistics Mean

    Find the mean of: 14, 8, 6, 3, 20

    Answer: 10.2

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