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 is the expanded form of the number 14,492?

• 10,000 + 4,000 + 400 + 90 + 2

• 10,000 + 4,000 + 90 + 2

• 1,000 + 400 + 90 + 2

• 10,000 + 400 + 90 + 2

When using an open number line, where should you start the number line for subtraction?

• At any random point

• At the larger number

• At the smaller number

• At zero

What is the result of the first jump when subtracting 29,389 minus 14,492 using an open number line?

• 14,897

• 15,389

• 19,389

• 14,989

In the example 42,321 minus 15,337, what is the result after subtracting 10,000?

• 26,984

• 26,991

• 32,321

• 27,321

What is the final result of the subtraction 42,321 minus 15,337 using an open number line?

• 27,021

• 26,991

• 26,984

• 27,321