Adding Numbers within 100 Using an Open Number Line

The video tutorial teaches how to add numbers within 100 using an open number line. It begins with an introduction to the concept, followed by a review of making 10 and skip counting by 10s. The tutorial then demonstrates how to use an open number line for addition, addressing common misunderstandings such as place value errors. Finally, it provides examples of adding numbers using this method, emphasizing the importance of decomposing numbers to reach friendly numbers.

What is the process of adding 14 + 3 using an open number line?

How can you decompose the number 8 to add it to 46?

What is a common misunderstanding children have when adding numbers like 4 + 6 and 14 + 6?

Explain how to add 68 + 7 using an open number line.

Describe how to add 29 + 9 and what steps you would take.