7.3+3.7=
0.15×4=
1.78+2.2=
12﹣9.6+0.4=
7.5÷25=
0.3÷0.01=
4÷0.8=
1.8×0.5﹣0.4=
0.16×5=
6.6÷0.66=
1.23×0.3=
0.25×4÷0.25×4=