Imagine you’re at a bakery, and the sign says, “Today only: 20% off a dozen cookies!” You glance at the price—$10 after the discount. But what’s the original, full price? That original price is what we call the whole number. It’s the 100% starting point before anyone touched it with a sale. You’re basically being a detective for the full story behind that percentage.
The simple trick that works every time
Here’s the golden rule: Turn the percentage into a decimal, then divide the part by that decimal. So if 20% off leaves you paying $10, you know you’re paying 80% of the original. Convert 80% to 0.80, then do $10 ÷ 0.80. Pop that into your phone calculator, and boom—the whole number is $12.50. You just saved yourself from guessing.
Let me tell you about my friend Dave. Dave once saw a jacket for 25% off and thought, “Hey, $45 is a steal!” He bought three. Later, he realized the original price was $60—and he didn’t even need that many jackets. If Dave had found the whole number first, he could have planned his budget like a pro. Don’t be Dave. Be the person who knows the starting line.
