A)
0,127:3,4=127/1000:34/10=127/1000x10/34=127/3400=0,03735294......
sau 127:3400=0,03
000
1270
0000
12700
10200
=2500
b) 2,97:0,12=297/100:12/100=297/12=24,75
24,75x0,12=2,97
c) 19,37:0,03=1937/100:3/100=1937/3=645,6666=645,(6)
d) 11,45:2,8=1145/100:28/10=1145/280=4,089....
e) 43,17:34,1=4317/100:341/10=4317/3410=1,265...