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September 3, 2015
Posted by **Delilah** on Friday, September 28, 2012 at 6:32pm.

21. 0.00105 written in scientific notation is 1.05 x 10^-3

are these correct?

- 7th grade math check my answers please quick -
**Steve**, Saturday, September 29, 2012 at 12:15pm11. 1.72*10^4

10,000 is 10^4

you only have to move the decimal point 4 places to the left to get a number less than 10.

21. correct