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Cornerstone · Grades 3–5 Keystones #1 9 September 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 9 September 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x - 6 = 24

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

    Calculate the hypotenuse when a = 9cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 225 in the ratio 2:3:4

    Answer: 50, 75 and 100
  5. 5. Statistics Mean

    Find the mean of: 4, 7, 8, 2, 4

    Answer: 5

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