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Cornerstone · Grades 3–5 Keystones #1 25 March 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 March 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 2⁄6

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

    Solve: 2x - 9 = 15

    Answer: x = 12
  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 65 in the ratio 4:1

    Answer: 52 and 13
  5. 5. Statistics Mean

    Calculate the mean of: 17, 31, 38, 43, 13, 22. Give your answer to 2 decimal places

    Answer: 27.33

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