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Cornerstone · Grades 3–5 Keystones #1 15 May 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 May 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 4⁄5

    Answer: 29⁄30
  2. 2. Algebra Two-step equations

    Solve: 3x - 8 = 4

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 208 in the ratio 1:4:3

    Answer: 26, 104 and 78
  5. 5. Statistics Mean

    Find the mean of: 16, 3, 2, 15, 9

    Answer: 9

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