4.8×9.9+48简便算法
4.8*99*48的简便算法?？
4.8*99*48=4.8X(100-1)X48=4.8X100X48-4.8X1X48=22809.6
4.8*10-4.8*1=48-4.8=43.2
4.8*99*48=4.8X(100-1)X48=4.8X100X48-4.8X1X48=22809.6
4.8*10-4.8*1=48-4.8=43.2
4.9× （10-0.1）4.9×10-4.9×0.1= 49-0.49=48.51
4.8+48x9.9 =4.8+4.8x99 =4.8x(1+99)=4.8x100 =480
4.8+48x9.9 用简便方法计算. 不用方程计算.?？
48*0.1+48*9.9=48*（0.1+9.9）480
计算过程如下😙_😤🐲：4.7x9.9 =4.7×10-4.7×0.1 =47-0.47 =46.53
48乘以9.9加4.8怎么简便计算?？
48*9.9+4.8=48*9.9+48*0.1=48*（9.9+0.1）48*10=480
=9.9×4.8+0.1×4.8 =(9.9+0.1)×4.8 =10×4.8 =48
4.8×9.9+1.2×0.4的简便算法。?？
4.8×9.9+1.2×0.4 =4.8x9.9+1.2x4x0.1 =4.8x9.9+4.8x0.1 =4.8x(9.9+0.1)=4.8x10 =48 （9+12.5）×0.8 =9x0.8+12.5x0.8 =7.2+100x0.125x8x0.1 =7.2+100x1x0.1 =7.2+10 =17.2 100.01*2.7 =(100+0.01)x2.7 =100x2.7+0.01x2.7 =到此结束了？🎃🐀--♠。
4.5×（10一0.1）4.5x10一4.5×0.1=45一0.45=44.55乘法分配律🎰🐁--🌱*，