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Cornerstone · Grades 3–5 Keystones #1 11 October 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 October 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 3x - 13 = 29

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 11.31cm
  4. 4. Ratio Sharing in a ratio

    Divide 136 in the ratio 1:3:4

    Answer: 17, 51 and 68
  5. 5. Statistics Mean

    Calculate the mean of: 44, 38, 42, 33, 25, 10

    Answer: 32

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