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Cornerstone · Grades 3–5 Keystones #1 3 November 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 November 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 1⁄7

    Answer: 11⁄28
  2. 2. Algebra Two-step equations

    Solve: 6x - 13 = 41

    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

    Share 25 in the ratio 1:4

    Answer: 5 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 17, 43, 24, 26, 28, 27, 31, 19. Give your answer to 2 decimal places

    Answer: 26.88

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