8.4+2.6=
1.8+1.6=
1.5+4.7=
5.8+1.7=
3.6+2.9=
7.9+6.9=
3.9+4.45=
3.77+1.9=
8.88+2.8=
2.75+3.75=
1.02+8.54 7.4+69.2 0.96+5.48 35.81+9.1
3.52+1.4 2.6+7.4 8.42+21.5 3.75+22.4
2.98+0.06 19.55+12.9
2.1+0.2=
0.3+0.7=
3.6十5.7二
1、0.10+2.5