Homework Help: 7th grade math standard form scientific notation

Posted by Delilah on Friday, September 28, 2012 at 7:05pm.

In standard form:

5. 3.2 x 10^3

7. 4.1 x 10^8

9. Write the average weight of a blue whale, 2.6 x 10^5, in standard form.

15. 2.5 x 10^-3

17. 1.05 x 10^-2

19. Write the size of a grain of very fine sand, about 9.35 x 10^-3 cm, in standard form.

Can somebody help? I have been stuck on these questions for 30 minutes....
Thanks.

7th grade math standard form scientific notation - Reiny, Friday, September 28, 2012 at 11:53pm
I don't understand what you mean by "I have been stuck on these questions for 30 minutes.... "
Are you just staring at the questions?
The concept of scientific notation can be learned in less than 5 minutes.

5. 3.2 x 10^3
= 5.3 x 1000
= 5300

15 . 2.5 x 10^-3
= 2.5 x .001
= 0.0025

You try the others.

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