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Cornerstone · Grades 3–5 Keystones #1 14 March 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 March 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 1⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x + 12 = 30

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 9.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 161 in the ratio 1:4:2

    Answer: 23, 92 and 46
  5. 5. Statistics Mean

    Calculate the mean of: 17, 35, 22, 37, 28, 42, 37, 8

    Answer: 28.25