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Cornerstone · Grades 3–5 Keystones #1 20 April 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 April 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 2⁄3

    Answer: 19⁄24
  2. 2. Algebra Two-step equations

    Solve: 3x - 13 = 32

    Answer: x = 15
  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

    Divide 162 in the ratio 1:4:4

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

    Find the mean of: 9, 6, 17, 20

    Answer: 13

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