406的15倍是多少?
5.43+1.47= 5﹣3.28= 0.46÷4.6= 4×0.25=3÷0.3= 4.5×0.4= 0.63÷0.7= 1.8×0.4=9.58×101﹣9.58= 85÷(1﹣0.9)=
直接写出得数 5.43+1.47= 5﹣3.28= 0.46÷4.6= 4×0.25= 3÷0.3=4.5×0.4= 0.63÷0.7= 1.8×0.4= 9.58×101﹣9.58= 85÷(1﹣0.9)=
口算 5﹣2.8= 4×0.25= 0.46÷4.6= 5.8+4.6=0.32×0.2= 32.1×0.3= 7.5﹣0.3= 3.2÷0.08=
直接写得数 6.2﹣3= 2.7+1.8= 0.25×4= 3.6÷6=0.36+0.14= 4﹣0.8= 8.4÷4= 9÷0.01=
脱式计算,能简便的要简算.57.5﹣3.25﹣16.75 125×3.2×25 ×16.31﹣2.31÷6760÷13+17×25 4.82﹣5.2÷0.8×0.6 35÷×1﹣.