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

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

  1. 1. Number Adding fractions

    Add: 3⁄6 + 3⁄7

    Answer: 13⁄14
  2. 2. Algebra Two-step equations

    Solve: 4x - 11 = 9

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 90 in the ratio 2:3:1

    Answer: 30, 45 and 15
  5. 5. Statistics Mean

    Find the mean of: 4, 10, 4, 14

    Answer: 8

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