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Cornerstone · Grades 3–5 Keystones #1 11 May 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 4⁄6

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x - 11 = 21

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Divide 170 in the ratio 1:2:2

    Answer: 34, 68 and 68
  5. 5. Statistics Mean

    Find the mean of: 18, 2, 13, 23

    Answer: 14

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