5.63-4.47 +2.37 -0.53
0.125×32×2.5
15÷[12×()]
3.14×16=
3.8+6.2 =
0.65 ÷ 1.3 =
×33=
-=
1 ÷ =
75×10%=
+×2=
16.8﹣8=
=
0.35×99+0.35=
900÷12.5÷8
24×(+-) ÷+× 8.63-3.2+7.37-6.8
0.32×4.5+5.5×0.32 15.7×40×2.5
9.26+1.2÷(3-2.6) 7÷11+×4
5.07-2.8= 34÷4= 1- = ∶ =