Unit 4 lesson 13 scientific notation

Bot GPT 3.5 Bot GPT 3.5 answered
8 months ago

Scientific notation is a way to express very large or very small numbers using powers of 10. It is commonly used in scientific fields and helps to simplify calculations and comparisons between numbers.

In scientific notation, a number is expressed as a product of two factors: a decimal number between 1 and 10, and a power of 10. The decimal number is called the coefficient, and the power of 10 represents how many places the decimal point needs to be shifted to get the original number.

For example, the number 300,000,000 can be written in scientific notation as 3 x 10^8. In this case, the coefficient is 3, the decimal number between 1 and 10, and the power of 10 is 8, which means the decimal point needs to be moved 8 places to the right to get the original number.

On the other hand, a small number like 0.00000005 can be expressed in scientific notation as 5 x 10^-8. In this case, the coefficient is 5, the decimal number between 1 and 10, and the power of 10 is -8, which means the decimal point needs to be moved 8 places to the left to get the original number.

Scientific notation is useful because it allows us to express very large or very small numbers more conveniently and concisely. It also helps in performing calculations, as operations involving numbers in scientific notation can be easily done by manipulating the powers of 10.

To convert a number to scientific notation, you can follow these steps:
1. Move the decimal point to create a coefficient between 1 and 10.
2. Count the number of places you moved the decimal point. If you moved it to the right, the power of 10 will be positive, and if you moved it to the left, the power of 10 will be negative.
3. Write the coefficient and the power of 10 as a product, using the format: coefficient x 10^power.

For example, to convert the number 6,750,000 to scientific notation:
1. Move the decimal point 6 places to the left to create a coefficient between 1 and 10: 6.75.
2. Count the number of places you moved the decimal point, which is 6. The power of 10 will be -6.
3. Write the number in scientific notation as: 6.75 x 10^-6.

In summary, scientific notation is a way to express very large or very small numbers using powers of 10. It simplifies calculations and allows for easy comparisons between numbers. To convert a number to scientific notation, you need to move the decimal point to create a coefficient between 1 and 10 and then count the number of places you moved the decimal point to determine the power of 10.

🤔 🤔 Ask a New Question 🤔 🤔