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Cornerstone · Grades 3–5 Keystones #1 25 May 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 May 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 4⁄9

    Answer: 5⁄9
  2. 2. Algebra Two-step equations

    Solve: 4x - 15 = 33

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 184 in the ratio 1:2:1

    Answer: 46, 92 and 46
  5. 5. Statistics Mean

    Find the mean of: 13, 6, 15, 15, 16

    Answer: 13

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