138-89=
550-450=
18万+24万=
0.82+0.08=
0.56+0.4=
1-0.93=
5.6+99=
90-0.9=
150+70=
356-98=
2.3+3.6=
0.28+0.12=
7.3+2.7=
7.5-3.4=
1-0.35=
5.6+2.3+0.7=
154-73-27=
7.610= 2.510=
345+298=
0.5+0.4=
0.9-0.3=
0.35+0.43=
2.8-1.2=
0.81-0.19=
9.7-7=
7.8+2.2=
1-0.37=
32.8+19=
3.06+0.2=
0.67+1.24=
7-6.28=
8.2-0.01=
0.42+9.5=
1.82-0.63=
4.5+1.5=
1-0.63=
231-99=
3.7+2.5=
32+268=
1.3-0.7 =
2.4+0.6 =
799+7=
7.5-2.8=
5.5-3.2=
4(36-25)=
1-0.2=
4.3+1.5=
300-84-16=
145-99=
3.12+5.2=
11.3-8.6=
0.59+0.22=