4. Subtracting Integers
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When we subtract a positive integer from a positive integer we first move to the right and then to the left on a number line.
- 3
We want to use a number line to find a difference. We can start by considering the given expression.
1- 4
This time we want to subtract 4 from 1. Let's draw an arrow from 0 to 1 on the the number line!
Next we can draw an arrow 4 units to the left to represent subtracting 4.
The difference of these two numbers is - 3.