Homework Help: 5th Grade Math

Posted by Janice on Thursday, February 10, 2011 at 11:26pm.

There are about 3,400 species of frogs and toads, and scientists tell us that they represent 90% of the amphibians in the world. Using this information, what is total number of amphibians scientists believe are in the world. (Round your answer to the nearest 100.)

5th Grade Math - Buzz, Friday, February 11, 2011 at 12:24am
3400/90% = 3777

round to nearest 100 so answer is:
3700
5th Grade Math - MattsRiceBowl, Friday, February 11, 2011 at 12:29am
The nearest hundred would actually be 3800. But the answer is completely wrong.

3400 x .9 = 3060.
Nearest hundred is 3100.
5th Grade Math - Buzz, Friday, February 11, 2011 at 12:38am
thanks for the correction the answer is 3800 otherwise that makes no sense. the question is asking for how many amphibians there are in the world and the 3400 represents 90% of all amphibians in the world. The answer can not be less then 3400 since thats not even logical.

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