Question

0.0021 write the number in scientific notation

Answer 1

2.1 x 10^-3

Explanation:

The easiest way to remember scientific notation is to count the zeros. In this example, there are 3 zeros, therefore the exponent must be 3. The way to know if it is a negative or a positive exponent is to see which side of the decimal point the number is. Since this is a very small number, it is a negative exponent.

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Answer 2

2.1 ⋅ 10−3

To find a scientific notation, multiply a number by some power of 10 or below.

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