Posted by **Rebekah** on Tuesday, August 19, 2008 at 8:16pm.

How would you figure out 1.45386759 x 10 to the 12 and round to the significant figure?

thanks

- 10th grade math -
**bobpursley**, Tuesday, August 19, 2008 at 8:23pm
Please explain. One has to know how many significant digits there are before it can be rounded.

- 10th grade math -
**Rebekah**, Tuesday, August 19, 2008 at 8:32pm
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**, Tuesday, August 19, 2008 at 8:38pm
sry... 1.548937075 x 10 to the 12th. round the number to 3 significat figures.

- 10th grade math -
**Rebekah**, Tuesday, August 19, 2008 at 8:48pm
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?

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