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Cornerstone · Grades 3–5 Keystones #1 8 April 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 April 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 3⁄6

    Answer: 13⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x + 8 = 36

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

    Calculate the hypotenuse when a = 12cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 3:4:1

    Answer: 42, 56 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 35, 17, 18, 43, 12, 45, 49. Give your answer to 2 decimal places

    Answer: 31.29

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