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Cornerstone · Grades 3–5 Keystones #1 12 December 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 December 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 3⁄4

    Answer: 31⁄20
  2. 2. Algebra Two-step equations

    Solve: 4x - 8 = 48

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Share 120 in the ratio 1:2

    Answer: 40 and 80
  5. 5. Statistics Mean

    Find the mean of: 23, 20, 5, 5, 17

    Answer: 14

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