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Cornerstone · Grades 3–5 Keystones #1 5 May 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 2⁄4

    Answer: 9⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x + 9 = 33

    Answer: x = 6
  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 98 in the ratio 4:2:1

    Answer: 56, 28 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 17, 30, 8, 32, 43, 34. Give your answer to 2 decimal places

    Answer: 27.33

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