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Cornerstone · Grades 3–5 Keystones #1 19 August 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 19 August 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 2⁄4

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x + 9 = 41

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 98 in the ratio 1:3:3

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

    Find the mean of: 12, 18, 6, 4

    Answer: 10

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