8.9+3.01= 1- + = 1.2×5= 3.8÷0.038=
÷ = 3604÷62≈ 0.62-0.32= 1÷10%=
( - )×24= ×8÷ ×8=
1.2×0.3= ﹣= 32÷53×0=
0.25÷= 1﹣0.09= +20%=
+0.625= ×= 24÷40%= 7.2÷0.9÷0.8=
□○□=□(元)
307﹣299= += ×0.63= A﹣A=
5.2﹣0.6= ÷= ×= 4.25×4=