How can 14x50 help you find 14x49
No. They both equal different numbers. They are clos, but no. 14×50 can not help you find 14×49.
The math behind 1450 is easier than the math behind 1449. However, if you do 1450 and then subtract 14, it is the same thing as 1449. This is an easier alternative, but both methods are still relatively simple.