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Cornerstone · Grades 3–5 Keystones #1 11 August 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 August 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 5⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x - 9 = 39

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 3:2:3

    Answer: 60, 40 and 60
  5. 5. Statistics Mean

    Find the mean of: 10, 13, 19

    Answer: 14