Answer :
One way to remember 0.25 = 1/4 is that a dollar is 1.00 and 0.25 can multiply 4 times into 1.00
One way to remember 0.5 = 1/2 is that 0.5 is half of a dollar
One way to remember 0.5 = 1/2 is that 0.5 is half of a dollar