What is 80% of 5?
Use our percentage calculator to easily find what 80 percent of 5 is. Calculate percentages fast with this simple percent calculator tool.
Result
4
80% of 5 = 4
Mathematical Formula
Detailed Explanation
Step 1: Understanding Percentages
80% means 80 parts out of 100. To convert a percentage to a decimal, we divide by 100: 80% = 0.8
Step 2: Multiplication
We multiply our number (5) by the decimal form of the percentage (0.8):
5 × 0.8 = 4
Step 3: Real-World Context
This means that 80% or 0.8 of 5 is 4. In other words, if you take 80% of 5, you get 4.
Common Use Cases
Discounts
When a $5 product has a 80% discount, you save $4 and pay $1.
Tips
If you want to leave a 80% tip on a $5 meal, you would leave $4 as the tip.
Taxes
When 80% sales tax is added to a $5 purchase, $4 is added for tax, making the total $9.
Proportions
If 80% of students in a class are boys and there are 5 students total, that means there are 4 boys.
Finance
If you invest $5 and earn 80% annual interest, you'll receive $4 in interest for the year.
Education
If a student answers 80% of questions correctly on a 5-question test, they answered 4 questions correctly.
Business
If 80% of your monthly revenue goes to operating expenses and you earn $5, you spend $4 on operations.
Healthcare
If a hospital reduces infections by 80% from 5 cases monthly, they now have only 1 cases per month.