Numbers in a Row: Author's Purpose

Why did the author most likely write this passage?

• A.To teach readers about number lines
• B.To sell a new video game
• C.To tell a spooky ghost story

Authors use examples to explain their ideas. Which sentence from the passage gives an example?

• A.Number lines help us add, subtract, and understand how numbers relate to…
• B.Each number is evenly spaced apart.
• C.For example, if you want to find the number 3, you would…