subtraction, empty set, placeholder, rounding off, numbers, educational Email us at [email protected] if you have questions about the footage and are interested in using it in your project.

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 \(- 7\).

Speaker: Subtraction is what you do when you take one amount away from another. It's calculating the difference between two numbers ... way is to count the empty spaces. 7 missing, 13 left.