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Cornerstone · Grades 3–5 Keystones #1 13 February 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 February 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 7⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x + 4 = 10

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

    Calculate the hypotenuse when a = 3cm and b = 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 133 in the ratio 3:1:3

    Answer: 57, 19 and 57
  5. 5. Statistics Mean

    Find the mean of: 13, 8, 5, 10

    Answer: 9

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