The total weight of all the babies born in the U.S. in a year can be calculated by multiplying the average weight of a newborn (7.5 pounds) by the total number of babies born (4.1×10^6).
Total weight = 7.5 pounds/baby * 4.1×10^6 babies
To multiply these numbers in scientific notation, we multiply the 7.5 by 4.1, and multiply 10^6 by 10^0.
Total weight = 30.75 * 10^6
In scientific notation, we can express this as:
Total weight = 3.075 × 10^7 pounds
The average newborn weighs 7.5 pounds. About 4.1×106 babies are born in the United States every year. What is the approximate total weight in pounds of all the babies born in the U.S. in a year? Write the answer in scientific notation, expressed to the exact decimal place.
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