Posted by Rebekah on .
How would you figure out 1.45386759 x 10 to the 12 and round to the significant figure?
thanks

10th grade math 
bobpursley,
Please explain. One has to know how many significant digits there are before it can be rounded.

10th grade math 
Rebekah,
ok. Like here in this example...
1.548937075 x 10 to the 12th. Would you do the problem 1.548937075 x 10 to the 12th which would be 1,548,937,075,000 first before you rounded. I think in the number that I got (1,548,937,075,000) there are 10 significant numbers?? 
10th grade math 
Rebekah,
sry... 1.548937075 x 10 to the 12th. round the number to 3 significat figures.

10th grade math 
Rebekah,
If you didn't do the power of 10 and just kept the number 1.548937075 wouldn't it be rounded to 1.55 if it was round to 3 significant numbers?