8.03 x 10^-8 x 2.56 x 10^-2

1 answer

To multiply two numbers written in scientific notation, you multiply the coefficients (the numbers before the "x 10^") and add the exponents.

8.03 x 10^-8 x 2.56 x 10^-2 = (8.03 x 2.56) x (10^-8 x 10^-2) = 20.5728 x 10^-10

To write this result in scientific notation, you divide the number part by 10 until it is between 1 and 10, and multiply the exponent accordingly.

20.5728 x 10^-10 = 2.05728 x 10^-9 (rounded to 5 decimal places)