How do you write 154378 in scientific notation?

2 Answers
Aug 6, 2018

To write this number in scientific notation we need to move the decimal point 5 places to the left therefore the exponent for the 10s term will be positive:

#154378 = 157378.0 = 1.54378 xx 10^5#

Aug 8, 2018



The key realization is that when we write numbers in scientific notation, we want one digit before the decimal point.

In our case, this means we must loop the decimal #5# times to the left. The number of times we looped it is our exponent, and looping left makes it positive.

Thus, we now have


Hope this helps!