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Cornerstone · Grades 3–5 Keystones #1 16 December 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 December 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 2⁄3

    Answer: 26⁄21
  2. 2. Algebra Two-step equations

    Solve: 2x - 20 = -12

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 2:3

    Answer: 32 and 48
  5. 5. Statistics Mean

    Find the mean of: 9, 23, 13

    Answer: 15

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