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

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

  1. 1. Number Adding fractions

    Add: 3⁄4 + 3⁄8

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

    Solve: 6x - 5 = 49

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.8cm
  4. 4. Ratio Sharing in a ratio

    Share 75 in the ratio 3:2

    Answer: 45 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 8, 10, 22, 5, 6, 6

    Answer: 9.5

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