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Cornerstone · Grades 3–5 Keystones #1 19 May 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 May 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 1⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 8x - 5 = 59

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

    Calculate the hypotenuse when a = 9cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 2:1:2

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

    Find the mean of: 3, 5, 5, 17, 5

    Answer: 7

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