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Cornerstone · Grades 3–5 Keystones #1 8 April 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 8 April 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 7⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x + 4 = 22

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 7.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 2:3:1

    Answer: 32, 48 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 29, 8, 46, 50, 12, 45. Give your answer to 2 decimal places

    Answer: 31.67

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