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

Five GCSE retrieval questions · 1 July 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄12 + 9⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x - 9 = 33

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Divide 240 in the ratio 3:3:4

    Answer: 72, 72 and 96
  5. 5. Statistics Mean

    Calculate the mean of: 45, 10, 50, 48, 9, 16. Give your answer to 2 decimal places

    Answer: 29.67

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