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Cornerstone · Grades 3–5 Keystones #1 23 December 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 December 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 6x - 6 = 30

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 24 in the ratio 1:3

    Answer: 6 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 23, 34, 22, 46, 22, 45

    Answer: 32

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