83.78-2.23-7.77 13.4×6.4+3.6×13.4 9.25×101-9.25
0.3+0.4=
19.35-13=
0.78+0.22=
3.47-0.7=
7-2.5=
9+1.5=
5.2-0.9=
2.88+6.02=