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

Five GCSE retrieval questions · 7 August 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 2⁄12

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x - 8 = 52

    Answer: x = 15
  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 168 in the ratio 1:1:2

    Answer: 42, 42 and 84
  5. 5. Statistics Mean

    Find the mean of: 4, 7, 4

    Answer: 5

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