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Cornerstone · Grades 3–5 Keystones #1 18 May 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 4⁄9

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

    Solve: 2x - 6 = 14

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

    Calculate the hypotenuse when a = 10cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Divide 189 in the ratio 4:2:1

    Answer: 108, 54 and 27
  5. 5. Statistics Mean

    Calculate the mean of: 27, 7, 25, 7, 25, 19, 40. Give your answer to 2 decimal places

    Answer: 21.43