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Cornerstone · Grades 3–5 Keystones #1 30 September 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 September 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 2⁄3

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

    Solve: 6x + 13 = 43

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.73cm
  4. 4. Ratio Sharing in a ratio

    Share 119 in the ratio 4:3

    Answer: 68 and 51
  5. 5. Statistics Mean

    Find the mean of: 9, 11, 19

    Answer: 13

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