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Cornerstone · Grades 3–5 Keystones #1 18 June 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 June 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 1⁄7

    Answer: 9⁄14
  2. 2. Algebra Two-step equations

    Solve: 6x - 8 = 46

    Answer: x = 9
  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 50 in the ratio 2:1:2

    Answer: 20, 10 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 27, 6, 22, 50, 30, 46, 47, 37

    Answer: 33.1

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