go up the number line (move to the right). When subtracting a positive number, go down the number line (move to the left). Start at \(3\) and go down \(10\). The answer is \(- 7\).

Bullish (Video) Coronet Film: Elementary Math - Addition, Subtraction & Number Line Posted: February 25, 2025 | Last updated: March 8, 2025 Explains the concept of zero in mathematics, emphasizing ...

Watch: What is a number line? A number line can be used to add and subtract. Watch the video to learn what a number line is, and how to use it! A number line is a great way to add and subtract.