3.45×3.6+0.345×65-34.5×0.01的简算？
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3.45×3.6+0.345×65-34.5×0.01
=3.45×3.6+0.345×6.5×10−3.45×10×0.01
=3.45×3.6+3.45×6.5−3.45×0.1
=3.45×(3.6+6.5−0.1)
=3.45×10
=34.5
=3.45×3.6+0.345×6.5×10−3.45×10×0.01
=3.45×3.6+3.45×6.5−3.45×0.1
=3.45×(3.6+6.5−0.1)
=3.45×10
=34.5
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