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Cornerstone · Grades 3–5 Keystones #1 20 December 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 4⁄5

    Answer: 17⁄15
  2. 2. Algebra Two-step equations

    Solve: 6x - 8 = 16

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 8cm

    Answer: 11.31cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 1:4:3

    Answer: 21, 84 and 63
  5. 5. Statistics Mean

    Find the mean of: 10, 7, 16, 20

    Answer: 13.25

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