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Cornerstone · Grades 3–5 Keystones #1 3 August 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 August 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 2⁄9

    Answer: 5⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x + 4 = 74

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

    Calculate the hypotenuse when a = 9cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Divide 175 in the ratio 3:3:1

    Answer: 75, 75 and 25
  5. 5. Statistics Mean

    Find the mean of: 2, 3, 20, 11

    Answer: 9