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Cornerstone · Grades 3–5 Keystones #1 23 November 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 November 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 3⁄6

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

    Solve: 7x - 20 = 50

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

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 150 in the ratio 2:2:1

    Answer: 60, 60 and 30
  5. 5. Statistics Mean

    Find the mean of: 2, 13, 18, 9

    Answer: 10.5

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