Subtracting Multi-Digit Whole Numbers Using an Open Number Line

This video tutorial teaches how to subtract multi-digit whole numbers using an open number line. It begins with a review of expanded form, breaking down numbers by place value. The tutorial then demonstrates subtraction through two examples, showing how to make jumps on an open number line by subtracting one place value at a time. The lesson emphasizes starting with the larger number and using expanded form to guide the subtraction process.

What adjustments do you need to make when you don't have enough value to subtract from your current number?

Describe the process of subtracting 42,321 minus 15,337 using an open number line.