#5 Problem of the Week Assigned Oct 12th Due Oct 19th GRADES 6,7,8

The week containing October 9 is National Fire Prevention Week. On October 9, 1871, the Great Chicago Fire occurred. In 1925, President Calvin Coolidge proclaimed the first National Fire Prevention Week to observe the date of that destructive fire.

a. The Great Chicago Fire burned 2000 acres in 27 hours. What was the average number of acres burned per hour?  about 74 acres burned per hour

b. There are 640 acres in one square mile. How many square miles burned in the fire?  3.125 miles were burned in the Great Chicago Fire
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c. There are 5,280 feet in one mile. What was the average number of square feet burned per hour in the Great Chicago Fire? Each hour about 3,226,667 square feet were burned.

A 17 Million Digit Prime Number WOW

A new prime number, thought to be the largest ever identified, has been discovered by a professor at the university of Central Missouri. Curtis Cooper used a giant computer network to do the work to find the 17-million digit number - which is a number divisible only by itself and by one.

A 17 Million Digit Prime Number WOW