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Cornerstone · Grades 3–5 Keystones #1 6 November 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 6 November 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 3x + 7 = 16

    Answer: x = 3
  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

    Share 50 in the ratio 1:4

    Answer: 10 and 40
  5. 5. Statistics Mean

    Find the mean of: 17, 10, 24, 5

    Answer: 14

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