A one-minute video on how to work out a fraction of an amount using bar models.
How to work out a fraction of an amount

Image caption, WHAT YOU NEED: Whiteboard, pen, ruler and a calculator.
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We’re going to draw a rectangle.I'm just going to mark one sixth of it.And then we're going to draw another rectangle directly underneath.And we’re just going to make a mark of where six equal squares would be.Once we’ve done this, we’re gonna draw one vertical line down,and we’re just gonna make a little note showing that this is 1200 m.Five vertical lines, so that this rectangle is split into six equal squares.And I’m going to colour in the first rectangle one colour,and then we’re going to colour the top square one colour.So we are colouring in this because it is one sixth of the entire rectangle.And then we are going to mark to show that this is one section.Because we don’t know how much one sixth is yet,we’re just going to put a little question mark.So the question mark is whatever 1200 divided by six is.200 m.So now we can show that one sixth is 200 m.I think that this method helps you understand it better,and to really learn how to do the division,I think it breaks it down more so it’s easier to understand.
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