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Cornerstone · Grades 3–5 Keystones #1 16 December 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 December 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄10 + 5⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x - 18 = 12

    Answer: x = 5
  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

    Share 60 in the ratio 2:3

    Answer: 24 and 36
  5. 5. Statistics Mean

    Find the mean of: 8, 7, 7, 14

    Answer: 9

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