(8) \( 1-0.9= \)

Did you know that the number 0.9 (or nine-tenths) can actually stir up some debate in mathematics? It’s interesting to note that 0.9 repeating (0.999...) is mathematically equivalent to 1! So, when you subtract 0.9 from 1, you’re technically getting 0.1, but in a fun twist, it leads into a conversation about how we perceive and understand numbers! Now, let’s talk about real-world applications! Understanding how to subtract decimals like 1 - 0.9 comes in handy when budgeting or managing finances. Imagine you’re at a store, and you want to keep track of your spending. If your total costs are $1 and you’ve spent $0.90, knowing that you have $0.10 left can help you decide if you can splurge on that chocolate bar you’re eyeing.