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

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

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x + 8 = 23

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

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 1:4

    Answer: 6 and 24
  5. 5. Statistics Mean

    Find the mean of: 8, 19, 3

    Answer: 10

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