It helps you narrow down to a smaller answer for example there is pi, (3.14159265359) and there is more and more to that number. It is now estimated to 3.14 because it would be almost impossible to work with pi if it wasn't estimated
All except combine like terms. Since you only have 1 variable.
Hope this helps.
r3t40
To get 1 you need to multiply -3/8 by -2/2/3 or -2.67
Just divide the number that is biggest by 2 and you should get the answers for example #1 10÷2=5, #2 1÷2=0.5 #3 0.01÷2=0.005
