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Cornerstone · Grades 3–5 Keystones #1 6 December 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 December 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 7⁄8

    Answer: 9⁄8
  2. 2. Algebra Two-step equations

    Solve: 2x + 13 = 29

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 308 in the ratio 3:4:4

    Answer: 84, 112 and 112
  5. 5. Statistics Mean

    Find the mean of: 3, 15, 21

    Answer: 13

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