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Cornerstone · Grades 3–5 Keystones #1 29 May 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 May 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 10 = 87

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 39 in the ratio 2:1

    Answer: 26 and 13
  5. 5. Statistics Mean

    Calculate the mean of: 40, 12, 14, 43, 41, 30, 44

    Answer: 32

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