Finding the Midpoint Using a Number Line

This lesson teaches how to find the midpoint between two numbers using a number line. It begins with a review of counting by 10s and 100s, and explains the concept of benchmark numbers. The lesson then covers how to read a number line and find midpoints, emphasizing that increments can vary. Practical examples demonstrate the importance of midpoints in real-world situations.

What is the purpose of using benchmark numbers on a number line?

• To help locate specific numbers more easily

• To mark the end of the number line

• To identify the starting point of counting

• To determine the length of the number line

When counting from 1000 to 2000, what increments should be used?

• Ones

• Tens

• Hundreds

• Thousands

What is a common mistake students make when reading a number line?

• Assuming increments always count by ones

• Ignoring the starting point of the line

• Using benchmark numbers incorrectly

• Counting backwards instead of forwards

How do you determine the midpoint between 230 and 240?

• By counting by ones

• By counting by tens

• By counting by hundreds

• By counting by fives

What is the midpoint between 800 and 900?

• 850

• 825

• 900

• 875