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Cornerstone · Grades 3–5 Keystones #1 2 March 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 March 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 2⁄10

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 5x + 4 = 54

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 110 in the ratio 2:1:2

    Answer: 44, 22 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 6, 29, 21, 39, 20, 29, 5. Give your answer to 2 decimal places

    Answer: 21.29

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