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

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

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 4⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 5x - 17 = 18

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 3:1

    Answer: 45 and 15
  5. 5. Statistics Mean

    Find the mean of: 5, 11, 19

    Answer: 11.666666666667

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