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三点八四乘以九点六加零点九六乘以六十一点六用简...

原式=3.84x9.6+0.96x61.6=3.84x9.6+0.96x10x6.16=3.84x9.6+9.6x6.16=(3.84+6.16)x9.6=10x9.6=96

3.84*9.6+0.96*61.6=9.6*(3.84+6.16)=9.6*10=96 望采纳

三点九除以零点二五加六点一乘四简便计算三点九除以零点二五加六点一乘四=3.9*4+6.1*4=4*(3.9+6.1)=4*10=40

6.66*0.49+3.33*0.02=3.33*(0.98+0.02)=3.33*1=3.33

9.6*(3.4+4.6)*0.125=9.6*8*1/8=9.6

=1.2x4x0.25=1.2x(4x0.25)=1.2x1=1.2

七点六乘三点九加零点七六乘61用简便算法:7.6*3.9+0.76*61=7.6*(3.9+61/10)=7.6*10=76.

2.22*9.9+6.66*6.7=2.22*3*3.3+6.66*6.7=6.66*3.3+6.66*6.7=6.66*(3.3+6.7)=66.6拆分后,乘法分配律有疑问请追问

6.8*0.41+0.59*3.4*2=6.8*0.41+0.59*6.8=6.8*(0.41+0.59)=6.8*1=6.8

=2.34*9.9+2.34*0.1=2.34*(9.9+0.1)=2.34*10=23.4

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