To find the total weight of all the babies born in the U.S. in a year, we need to multiply the average weight of a newborn by the number of babies born.
Total weight = Average weight × Number of babies
In scientific notation, the average weight of a newborn is 7.5 pounds written as 7.5 × 10^0 pounds.
The number of babies born in the U.S. in a year is 4.1 × 10^6 babies.
Multiplying these two numbers in scientific notation, we get:
Total weight = (7.5 × 10^0) × (4.1 × 10^6)
= (7.5 × 4.1) × (10^0 × 10^6) (Using the multiplication rule of exponents)
= 30.75 × 10^6
As per the question, we need to express the answer in scientific notation, which means the decimal place is exact. Therefore, the total weight of all the babies born in the U.S. in a year is approximately 30.75 × 10^6 pounds.
The average newborn weighs 7.5 pounds. About 4.1x10^6 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
1 answer
1 answer