0.89×5.1-0.89×5
=0.89×(5.1-5)
=0.89×0.1
=0.089
望采纳,谢谢!
0.89×5.1-0.89×5
=0.89×(5.1-5)
=0.89×0.1
=0.089
解:原式
=0.89×(5.1-5)
=0.89×0.1
=0.089
整数乘法分配律对小数乘法同样适用。
0.89×5.1-0.89×5
=(5.1-5)×0.89
=0.1×0.89
=0.089
0.89×5.1-0.89×5
=0.89×(5.1-5)
=0.89×0.1
=0.089
运用乘法的分配率