How do you write 129.5 million in scientific notation?
Written out it looks like:
We're going to move the decimal place to the left to remove all of the zeroes. Right now the decimal place is here:
We're going to move it all the way to here and remove the zeroes:
Okay, so put your finger where the decimal is at in the first spot and move it all the way to the second spot, counting as you go. You should have moved
Here is a helpful image on scientific notation:
And here is a helpful article .