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

Five GCSE retrieval questions · 3 December 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 5⁄9

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 2x - 6 = 20

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 116 in the ratio 1:2:1

    Answer: 29, 58 and 29
  5. 5. Statistics Mean

    Calculate the mean of: 42, 33, 8, 47, 35, 14. Give your answer to 2 decimal places

    Answer: 29.83

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