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Cornerstone · Grades 3–5 Keystones #1 4 April 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 April 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 4⁄6

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 9 = 30

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 232 in the ratio 1:1:2

    Answer: 58, 58 and 116
  5. 5. Statistics Mean

    Calculate the mean of: 43, 34, 48, 12, 11, 22. Give your answer to 2 decimal places

    Answer: 28.33

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