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Cornerstone · Grades 3–5 Keystones #1 5 May 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 May 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 1⁄10

    Answer: 1⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x - 14 = 16

    Answer: x = 6
  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 240 in the ratio 2:3:3

    Answer: 60, 90 and 90
  5. 5. Statistics Mean

    Calculate the mean of: 17, 8, 11, 22, 22, 42, 48. Give your answer to 2 decimal places

    Answer: 24.29

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