口算:4.5÷3= 3.5÷5= 0.024÷6= 2.2÷2=5.6÷8= 0.48÷6= 9.9÷33= 7.2÷12=0.54÷3=
0.89×0.48+0.89×0.520.25×13.7×0.44.2×101 3.6×992.5×32×1.250.125×88 56.5×99+56.5(1.25﹣0.125)×845÷0.09÷0.5 17.8÷(1.78×4)
计算下列各题.(能简算的要简算). 91÷2.6÷0.05=6.3×3.7+6.3×6.3=(3.7+1.7×0.4)÷2.5= 7.28+3.2÷2.5=0.74+0.9×7.4=7.8÷0.125÷0.8=
计算下面各题,能用简便算法的用简便算法 3.045+2.7×6.9=18.94﹣2.5×4= 3.65×2.8+3.65×7.2=13.54×102﹣2×13.54=
选择合适的方法计算 ①7.8÷0.26÷0.3 ②5.4+4.6÷0.2 ③1.43×2.5+0.57×2.5 ④10.8÷0.27×4.
计算下面各题,怎样简便就怎样算. (1)45.36÷7.2﹣2.5×0.2(2)5.12﹣(4.65﹣4.88) (3)2.7÷4+6.3×0.5(4)9.43×1.1 (5)0.25×12.5×3.2(6)30.8×0.35+6.5×3.08.