5×0.4= 2.5×0.4= 2.3×0.2= 2.1÷0.3= 7.1×0.4= 4.5÷0.15= 1-0.07= 0.42÷0.7= 12.4÷4= 2.5+1.5= 5.9×0.2= 0.48÷0.8= 0.25×1.3×4= 20÷0.01= 9÷0.01= 5.5÷1.1= 4.79+15.81= 0.3÷0.03= 0.2×0.1= 3.6+6.4= 0.56÷0.28= 1.2×0.3= 6.7-5.6= 7.25÷0.5= 4.2÷0.21= 4.3×0= 0.15÷0.5= 3.5×4= 5.32-5.3= 1.25×3.4×8= 9.6÷3.2= 3.6+2.4= 4.3-2.7+5.7= 7.2-5.6= 1.8÷0.9= 8.2×0.5= 5.6÷0.4= 8.5÷5= 5.6×0.5= 9.8÷0.2= 3.56×0.2= 3.4+1.5+4.6= 3.4×0.04= 6.12+3.48= 6÷0.12= 7.6÷4= 3.4×0.5= 5.2-3.2-1.8= 6-3.8= 7.5÷3= 3.5+5.4= 3×2.5= 3.5+6.5= 7-6.23= 8÷0.4= 0.25×2.5= 7.5÷0.5= 0.89-0.48= 3.5×0.8= 5.9-（3.2+0.9）=