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Cornerstone · Grades 3–5 Keystones #1 12 May 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 May 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄10 + 2⁄10

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

    Solve: 3x + 15 = 42

    Answer: x = 9
  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

    Divide 108 in the ratio 1:2:1

    Answer: 27, 54 and 27
  5. 5. Statistics Mean

    Find the mean of: 13, 8, 6

    Answer: 9

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