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

  1. 1. Number Adding fractions

    Add: 5⁄8 + 1⁄3

    Answer: 23⁄24
  2. 2. Algebra Two-step equations

    Solve: 4x - 14 = 46

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 150 in the ratio 1:3:1

    Answer: 30, 90 and 30
  5. 5. Statistics Mean

    Find the mean of: 20, 19, 6, 8

    Answer: 13.25

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