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Cornerstone · Grades 3–5 Keystones #1 12 February 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 February 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 1⁄8

    Answer: 1⁄4
  2. 2. Algebra Two-step equations

    Solve: 5x + 5 = 60

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 192 in the ratio 4:3:1

    Answer: 96, 72 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 34, 41, 23, 44, 46, 13, 29, 14

    Answer: 30.5

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