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Cornerstone · Grades 3–5 Keystones #1 6 April 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 April 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 5x + 13 = 38

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 10cm

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

    Divide 99 in the ratio 2:4:3

    Answer: 22, 44 and 33
  5. 5. Statistics Mean

    Find the mean of: 12, 17, 8, 5

    Answer: 10.5

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