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Cornerstone · Grades 3–5 Keystones #1 4 July 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 July 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 1⁄8

    Answer: 11⁄24
  2. 2. Algebra Two-step equations

    Solve: 3x + 7 = 28

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 16.64cm
  4. 4. Ratio Sharing in a ratio

    Share 140 in the ratio 3:4

    Answer: 60 and 80
  5. 5. Statistics Mean

    Calculate the mean of: 22, 17, 23, 8, 49, 31

    Answer: 25

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