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Cornerstone · Grades 3–5 Keystones #1 10 April 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 April 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 3x - 13 = 32

    Answer: x = 15
  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 80 in the ratio 1:3:1

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

    Find the mean of: 9, 7, 9, 7, 13

    Answer: 9

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