The inverse property of addition says that when you add opposites the result is always zero.
Ex) 64 + 64 = 0
The inverse property of multiplication says that when you multiply reciprocals* the result is one.
Ex) 4/5 *5/4 = 1
* reciprocals are the numbers you get when you flip a number. In other words you take the numerator and make it the denominator and take the denominator and make it the numerator. 2 and ½ are reciprocals.
