题目内容

【题目】1.69÷1.3+2.5×0.4  15.8×0.6+15.8×0.4 96.5×105﹣5×96.5.

【答案】2.3;15.8;9650

【解析】

1.69÷1.3+2.5×0.4,

=1.3+1,

=2.3;

15.8×0.6+15.8×0.4,

=(0.6+0.4)×15.8,

=1×15.8,

=15.8;  

96.5×105﹣5×96.5,

=(105﹣5)×96.5,

=9650

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