If you draw a line 10 cm or inches long on a piece of paper, that represents the range 0 to 100,000. So the point representing 89,675 is going to be pretty close to the end. If the line is 10 cm long, the point will be very close to 9 cm or 9 inches (8.97) if the line is 10 inches long. The other way of representing the number on a number line is to use just a segment covering the range. Imagine taking a magnifying glass and looking at your number line through it near to the 100,000 end, so that you see the part from, say, 8 cm to 10 cm or 8" to 10", representing 80,000 to 100,000. That's a segment, and you can draw just that 2 cm or 2" segment as another number line. If you draw a line 20 cm long to represent that segment and mark one end 80000 and the other end 100000, 89,675 will be close to 10 cm from each end, that is, 9.675 cm from the 80,000 mark and 10.325 cm from the 100,000 mark. The nearest point you can actually see may be 9.68 cm. You could then zoom in again with your magnifying glass. It's rather like zooming in on a map. The next segment you draw may be 10 cm or 10" long representing 89,000 to 90,000, so this time your number will be 6.75 or 6 3/4 along the line. Each of the number line segments you drew is a zoomed image.