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**Oculus8596****Banned**- From: Great Lakes,Illinois
- Registered: 2024-09-18
- Posts: 126

A number is written in scientific notation if it is written in the form a • 10^n, where 1 ≤ | a | < 10 and n is an integer.

Write each number in scientific notation.

A. 0.00421

B. 21, 210

Question A

Moving the decimal point three places to the right, I get

4.21.

Now multiply 4.21 by 10^(-3).

Question B

The number 21,210 = 21, 210.00.

To land between 1 and 10, move the decimal point 4 places to the left.

Doing so, I get 2.1210.

Multiply 2.1210 by 10^4.

Do you agree?

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