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Cornerstone · Grades 3–5 Keystones #1 18 November 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 November 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 7⁄8

    Answer: 29⁄24
  2. 2. Algebra Two-step equations

    Solve: 2x + 8 = 26

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 33 in the ratio 1:2

    Answer: 11 and 22
  5. 5. Statistics Mean

    Find the mean of: 19, 7, 15, 20

    Answer: 15.25

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