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Cornerstone · Grades 3–5 Keystones #1 20 March 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 March 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x + 7 = 42

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Divide 70 in the ratio 1:1:3

    Answer: 14, 14 and 42
  5. 5. Statistics Mean

    Calculate the mean of: 33, 32, 35, 12, 10, 31

    Answer: 25.5