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Cornerstone · Grades 3–5 Keystones #1 12 December 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 3⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x + 6 = 42

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 1:1:2

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

    Calculate the mean of: 6, 39, 39, 43, 26, 6, 33, 29. Give your answer to 2 decimal places

    Answer: 27.63

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