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Cornerstone · Grades 3–5 Keystones #1 22 March 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 March 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄10 + 1⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x + 6 = 48

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

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio Sharing in a ratio

    Share 91 in the ratio 4:3

    Answer: 52 and 39
  5. 5. Statistics Mean

    Calculate the mean of: 16, 43, 23, 29, 25, 31, 44, 28. Give your answer to 2 decimal places

    Answer: 29.88

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