What is the relationship between 3.0 and 0.3 its hw

3.0 is as much as 3
0.3 is one tenth of 3

The three in 3.0 is at ones place
The three in 0.3 is at tenths place

Those are the major differences, I hope it'll help you :)

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.