1)9,2-6,7=9 2/10-6 7/10=92/10-67/10=2 5/10=2,5;
2)29,36-19,59=29 36/100-19 59/100=2936/100-1959/100=
977/100=9,77;
3)13,5-8,28=13 5/10- 8 28/100=135/10-828/100=
1350/100-828/100=522/100=5,22; 4)20-5,63= 20- 5 63/100=20- 563/100=2000/100-563/100=1437/100=14,37;
5)8,3-4,678= 8 3/10- 4 678/1000 =83/10-4678/1000=
8300/1000-4678/1000=3622/1000 = 3,622;
6)38,06-17,4=38 6/100- 17 4/10=3806/100-174/10=
3806/100-1740/100=2066/100= 20,66