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Cornerstone · Grades 3–5 Keystones #1 10 May 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 May 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 2⁄6

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

    Solve: 5x + 8 = 48

    Answer: x = 8
  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 136 in the ratio 1:2:1

    Answer: 34, 68 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 40, 24, 30, 22, 15, 18, 27. Give your answer to 2 decimal places

    Answer: 25.14

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