(6.5减6.5乘以0.65减6.5乘以0.34)怎么巧算?
1个回答
答:
6.5减6.5乘以0.65减6.5乘以0.34
=6.5-6.5×0.65-6.5×0.34
=6.5×(1-0.65-0.34)
=6.5×(1-0.99)
=6.5×0.01
=0.065
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