问题 填空题
计算:(2.5×
4
5
)÷(
1
4
×0.8)-0.75÷
3
40
=______.
答案

(2.5×

4
5
)÷(
1
4
×0.8)-0.75÷
3
40

=2÷0.2-

3
4
×
40
3

=10-10,

=0.

故答案为:0.

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