What are 2 ways to solve the problem 9×1×5 = ?

2ways you can solve that is by multiplying 9 by 1 then by 5 or 9by 5 then by 1

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.