问题 解答题

计算下面各题,怎样简便就怎样计算.

4.5×(10.1÷0.9)

1.01÷0.25

7.32÷0.125÷0.8

1.62×4.8÷1.6.

答案

(1)4.5×(10.1÷0.9),

=4.5×10.1÷0.9,

=4.5÷0.9×10.1,

=5×10.1,

=50.5;

(2)1.01÷0.25,

=(1+0.01)÷0.25,

=1÷0.25+0.1÷0.25,

=4+0.04,

=4.04;

(3)7.32÷0.125÷0.8,

=7.32÷(0.125×0.8),

=7.32÷0.1,

=0.732;

(4)1.62×4.8÷1.6,

=1.62×(4.8÷1.6),

=1.62×3,

=4.86.

单项选择题
单项选择题