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Cornerstone · Grades 3–5 Keystones #1 30 December 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 2⁄4

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x - 14 = 46

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 88 in the ratio 1:2:1

    Answer: 22, 44 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 33, 8, 14, 26, 23, 36, 39, 34. Give your answer to 2 decimal places

    Answer: 26.63

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