Lesson

As we are about to compare positive and negative numbers, make sure you can first order and compare positive numbers. Try this question first.

We want to work out which of 2 numbers is the biggest.

a

Plot 29 and 23 on the number line below:

Worked Solution

b

Write the two numbers from smallest to biggest.

Worked Solution

Idea summary

When we compare two integers on a number line, the integer further to the right is always greater.

Neil enters an elevator at the 6th floor above ground (the ground floor being zero). The elevator goes down 3 floors, then up 8 floors and finally it goes down 4 floors.

a

Does Neil end up above or below the ground floor?

Worked Solution

b

On which floor does he end up?

Worked Solution

Idea summary

As numbers decrease, they move to the left. You can use this to help you compare integers. Integers that are more to the left are less than numbers that more to the right on a number line.

Investigate everyday situations that use integers. Locate and represent these numbers on a number line.