Adding with Number Lines: A Step-by-Step Guide

This video tutorial teaches how to add numbers using a number line. It begins with an introduction to number lines and decomposing numbers, followed by methods of counting on number lines. Two examples are provided: one involving Amanda's hula hoops and another with school buses, demonstrating how to use number lines for addition. The lesson concludes with a summary of the concepts covered.

What is the purpose of decomposing numbers when using a number line?

• To make numbers larger

• To change the number line range

• To simplify the addition process

• To make numbers smaller

How can you describe the nature of a number line?

• It is infinite in both directions

• It is limited to whole numbers

• It has a fixed range

• It only shows even numbers

In Amanda's hula hoop example, what is the first step in using the number line to add?

• Find the second addend

• Decompose the first addend

• Locate the first addend on the number line

• Skip count to the sum

When adding 40 and 15 on a number line, what is the result after adding the decomposed 10?

• 45

• 50

• 55

• 60

In the school bus example, what is the final sum of 34 and 28 using the number line?

• 58

• 62

• 64

• 60