(1)2.01×1.53÷0.18, =3.0753÷0.18, =17.085; (2)5.86×99.4+5.86×0.6, =5.86×(99.4+0.6), =5.86×100, =586; (3)2.2×2.2+2.2×7.8, =2.2×(2.2+7.8), =2.2×10, =22; (4)0.25×(4.83-0.85), =0.25×3.98, =0.25×4-0.25×0.02, =1-0.005, =0.995; (5)(12.5+1.25+0.125)×8, =12.5×8+1.25×8+0.125×8, =100+10+1, =110+1, =111; (6)(148.4-90.85)÷2.5, =57.55÷2.5, =23.02. |