3.84*9.6+0.98*61.6简算

问题描述:

3.84*9.6+0.98*61.6简算

9.9 =4.86×10-4.86×0.1 =48.6-0.486 =48.114 4.9×1.02 =5×1.02-0.1×1.02 =5.1-0.102 =4.998 3.84乘以9.6 0.96乘以61...

3.84*9.6+0.98*61.6
=3.84*9.8+9.8*6.16-3.84*0.2
=(3.84+6.16)*9.8-0.768
=10*9.8-0.768
=98-0.768
=97.232

题目有问题吧
应该是:
3.84*9.6+0.96*61.6
=3.84*9.6+9.6*6.16
=(3.84+6.16)*9.6
=10*9.6
=96

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