340 years
53 decades Yup. A decade is ten years. A century is 100 years. 5 centuries are 500 years so 500 divided by 10 is 50. Add the three other decades and you get 53.
30 decades
3 centuries = 300 years
3 scores, one decade, five years seven decades five years 7.5 decades .75 centuries a senior
a decade is 10 years long therefore 3 decades would be 30 years
a decade is ten years, a century is one hundred years. one hundred times three is three hundred. three hundred divided by ten equals thirty
Oh, what a lovely question! Let's see here. 3 centuries is 300 years, 7 decades is 70 years, and 4 years is, well, 4 years. If we add them all together, we get a total of 374 years. Isn't that just a happy little sum?
1 century = 100 years 3 centuries = 300 years.
3 decades = 3 x 10 = 30 years
30.
10 years = 1 decade 20 years = 2 decades 30 years = 3 decades . . etc.
It is 3 decades, because it is 30 years.