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

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

  1. 1. Number Adding fractions

    Add: 2⁄3 + 6⁄7

    Answer: 32⁄21
  2. 2. Algebra Two-step equations

    Solve: 2x + 10 = 30

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 8.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 253 in the ratio 3:4:4

    Answer: 69, 92 and 92
  5. 5. Statistics Mean

    Find the mean of: 3, 13, 11

    Answer: 9

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