Question 246728
4/5 ÷ 12/20
(4/5)*(20/12)
1/1*4/3=4/3

2.5 + 1.05 + 3.105
make believe you are adding dollars and cents
add zeroes to fill out zeroes after a decimal add nothing (0) 
2.500
1.050
3.105

here you don't even have to carry just keep the sums in the right column