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Middle School Math
Math

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 1 In the collection of viruses at Big Town University, they had 20 kinds of viruses. If three-fifths of them were animal viruses, how many were not animal viruses?
 2 Oh-oh, rats have moved into Mr. Bloop's back yard. If the colony has 4 members now but doubles in size every year, how many rats might there be in Mr. Bloop's back yard after five years?
 3 Rat snakes produce 7-27 eggs once or twice a year. If 9% of the young survive to maturity, what is the maximum number of surviving offspring a rat snake would be expected to produce in 5 years?
 4 Professor Bloop estimated there were twenty-one million bacteriophages in a petri dish of bacteria. If he had eighteen such petri dishes, what was the total number of bacteriophages?
 5 * This is a pre-made sheet.Use the link at the top of the page for a printable page.
 6 At the Smallville Animal Hospital it costs \$40 dollars to perform a procedure on a dog that weighs greater than 35 pounds, and \$23 dollars for a dog that weighs from 20 to 35 pounds. What would be the total cost to perform the procedure on a group of dogs that had the following weights (in pounds): 40, 45, 36, 35, 24, 39 and 38?