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Cornerstone · Grades 3–5 Keystones #1 16 September 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄7

    Answer: 25⁄28
  2. 2. Algebra Two-step equations

    Solve: 3x + 11 = 20

    Answer: x = 3
  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 56 in the ratio 3:1

    Answer: 42 and 14
  5. 5. Statistics Mean

    Find the mean of: 13, 6, 2, 4, 2

    Answer: 5.4

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