A number line is a horizontal line that has points which represent numbers. You can graph numbers by representing them as points on the number line. You can also compare the two numbers with a greater than or less than sign.
1. smallest largest
The symbols for greater than and less than are:
< = less than
> = greater than
Here are some examples from the video:
-6< 2 notice -6 is to the left of 2
-5<-4 notice -5 is to the left of -4
Today we are going to look at inequalities on a number line or greater than and less than problems. The less than symbol looks like an L and the greater than does not so it can’t be an L so that one is greater than. So we are going to do some comparing of integers which are just positive and negative numbers. So let’s compare negative six and positive two and negative five to negative four. So let’s look at the rules. The rules for a number line are: the smallest number is the left most number. The smallest number will always be on the left on a number line. So here is how you write the inequality. The symbol points to the smaller and the alligator is eating the larger number. If the larger number is on the left then you use the greater than symbol. So let’s compare these on a number line. We have negative six comparing to positive two, so here’s my zero and negative six falls six places away. The negative six falls on the left so it is the smaller number. Now let’s look at two negative numbers. So here is negative five and here is negative four so negative five is to the left so you would write negative five is less than negative four. Using the number line is a productive way to negative numbers and positive integers to compare them. Hope this video was helpful.