To find what percentage 40 is of 800, you can use the formula:

\[
\text{Percentage} = \left(\frac{\text{Part}}{\text{Whole}}\right) \times 100
\]

Here, the "Part" is 40, and the "Whole" is 800:

\[
\text{Percentage} = \left(\frac{40}{800}\right) \times 100 = 5\%
\]

So, 40 is 5% of 800.

Would you like more details or have any questions? Here are some related questions:

1. How do you calculate percentages in general?
2. What is 20% of 800?
3. How can you convert a percentage to a decimal?
4. What is 5% of 1,600?
5. How do you increase a number by a certain percentage?
6. What is the percentage increase from 40 to 60?
7. How do you decrease a number by a percentage?
8. What is the relationship between fractions and percentages?

**Tip:** To find the percentage of a number, always divide the part by the whole and multiply by 100.

Learn how to calculate what percentage 40 is of 800 with our detailed step-by-step guide. Understand the percentage formula and practice converting fractions to percentages. Suitable for Grades 6-8.

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