(450× )÷(25×4)=18;
(450×3)÷25=;
450÷(25÷5)= ;
450÷(25×2)= ;
4.5÷0.18= 45÷1.8= 4.5÷1.8=
4.5÷18= 0.45÷0.18= 0.45÷1.8=
50500500050050500 124×566×134
160÷8320÷16
÷0.9 0.9 0.57×0.7 0.57
36×10%3.6 ÷1.52
8.4÷0.21= 84÷2.1=
0.84÷2.1= 0.84÷0.21=