Adding Numbers Using an Open Number Line

This video tutorial teaches how to add multi-digit whole numbers using an open number line. It begins with a review of expanded form, breaking down numbers into their place values. The tutorial then demonstrates the addition process with two examples, showing how to make jumps on the number line by adding parts of the expanded form. The video emphasizes understanding place value changes during addition.

What is the purpose of using an open number line in addition?

• To subtract numbers easily

• To visualize the addition process

• To multiply numbers quickly

• To divide numbers accurately

What is the expanded form of the number 12,517?

• 10,000 + 2,000 + 500 + 10 + 7

• 12,000 + 500 + 17

• 1,000 + 2,000 + 500 + 10 + 7

• 10,000 + 2,500 + 10 + 7

When adding 23,674 and 12,517, what is the result after the first jump of 10,000?

• 33,674

• 13,674

• 43,674

• 23,674

In the first example, what is the final result of adding 23,674 and 12,517?

• 35,674

• 36,184

• 36,191

• 36,174

What is the expanded form of 15,397?

• 1,000 + 5,000 + 300 + 90 + 7

• 15,000 + 300 + 97

• 10,000 + 5,000 + 300 + 90 + 7

• 10,000 + 5,300 + 90 + 7

After adding 10,000 to 42,321, what is the new number?

• 62,321

• 42,321

• 32,321

• 52,321

What is the final result of adding 42,321 and 15,397 using an open number line?

• 57,621

• 57,711

• 57,718

• 57,321