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Cornerstone · Grades 3–5 Keystones #1 6 May 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 1⁄6

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 5x + 3 = 23

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 152 in the ratio 4:1:3

    Answer: 76, 19 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 39, 39, 38, 8, 26, 37, 47. Give your answer to 2 decimal places

    Answer: 33.43

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