by Guest » Wed Dec 15, 2021 1:41 pm
"I still do not understand how multiply fractions or decimals get smaller."
Do you understand what a fraction is? "1/3" is itself smaller than 1- it is 1 cut into three equal parts. And if you multiply 1/3 by any thing, that is the same as cutting that "thing" into three equal parts so naturally each part is smaller than the original thing.
(That applies only to "proper fraction", "improper fractions" where the numerator is larger than the denominator, like 7/3, when multiplyed by a number, make it larger.)
As for "-1*10000", do you agree that 1- 1= 1+ (-1)= 0? And the "distributive law" says that a(b+ c)= ab+ ac. So 10000(1+ (-1))= 10000+ (-1)(10000)= 0. That is, (-1)(10000) is the "additive inverse" of 10000, i.e. -10000.