To add negative numbers on a number line, start at the first number, and then move to the left (backwards) by the value of the negative number you're adding.
Here's a breakdown:
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Start at the First Number: Locate the first number in your equation on the number line. This is your starting point.
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Determine the Direction: If you are adding a negative number, you will move to the left (towards smaller numbers) on the number line. If you were adding a positive number, you would move to the right.
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Move the Correct Number of Spaces: The absolute value of the number you are adding tells you how many spaces to move. For example, if you are adding -7, you will move 7 spaces.
Example:
Let's say you want to add 3 + (-5) using a number line:
- Start at 3: Find the number 3 on the number line.
- Move Left: Because you are adding -5 (a negative number), you'll move to the left.
- Move 5 Spaces: Move 5 spaces to the left from 3.
- Result: You will land on -2. Therefore, 3 + (-5) = -2
