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Cornerstone · Grades 3–5 Keystones #1 4 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 2⁄8

    Answer: 23⁄28
  2. 2. Algebra Two-step equations

    Solve: 2x + 10 = 32

    Answer: x = 11
  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

    Share 60 in the ratio 2:1

    Answer: 40 and 20
  5. 5. Statistics Mean

    Find the mean of: 11, 5, 9, 19, 17

    Answer: 12.2

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