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Cornerstone · Grades 3–5 Keystones #1 11 May 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 May 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 3⁄6

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 6x - 11 = 67

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 4:3

    Answer: 40 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 19, 6, 16, 11, 15, 23, 29

    Answer: 17

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