How do you write 20.1 in scientific notation?

2.01 x 10^1

To write 20.1 in scientific notation, follow these steps:

Step 1: Move the decimal point to the right of the first non-zero digit, which in this case is already at the correct position.
Step 2: Count the number of places you moved the decimal point. In this case, you did not have to move the decimal point, so the count is 0.
Step 3: Determine the exponent of 10 by taking the number of places you moved the decimal point and adding a negative sign to it. In this case, the exponent would be 0.
Step 4: Represent the number in scientific notation by writing 20.1 multiplied by 10 raised to the power of 0. Thus, 20.1 in scientific notation is written as 2.01 x 10^1.