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Cornerstone · Grades 3–5 Keystones #1 11 November 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 November 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 2⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x - 11 = 73

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 10cm

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 152 in the ratio 3:3:2

    Answer: 57, 57 and 38
  5. 5. Statistics Mean

    Find the mean of: 8, 17, 20, 15

    Answer: 15

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