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Cornerstone · Grades 3–5 Keystones #1 28 May 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 May 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 6⁄8

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

    Solve: 7x + 15 = 36

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

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 162 in the ratio 4:4:1

    Answer: 72, 72 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 13, 43, 5, 8, 28, 35, 45, 5

    Answer: 22.75

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