如题所述
三又五分之三乘二十五又五分之二加37.9乘六又五分之二
=3又3/5×25又2/5+37.9×6又2/5
=3.6×(19+6.4)+37.9×6.4
=3.6×6.4+3.6×19+37.9×6.4
=6.4×(3.6+37.9)+3.6×(20-1)
=6.4×41.5+3.6×(20-1)
=6.4×(40+1+0.5)+3.6×(20-1)
=256+6.4+3.2+72-3.6
=256+72+6.4+3.2-3.6
=328+9.6-3.6
=328+6
=334
=3又3/5×25又2/5+37.9×6又2/5
=3.6×(19+6.4)+37.9×6.4
=3.6×6.4+3.6×19+37.9×6.4
=6.4×(3.6+37.9)+3.6×(20-1)
=6.4×41.5+3.6×(20-1)
=6.4×(40+1+0.5)+3.6×(20-1)
=256+6.4+3.2+72-3.6
=256+72+6.4+3.2-3.6
=328+9.6-3.6
=328+6
=334
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第1个回答 2022-07-12
三又五分之三乘二十五又五分之二加37.9乘六又五分之二
=3又3/5×25又2/5+37.9×6又2/5
=3.6×(19+6.4)+37.9×6.4
=3.6×6.4+3.6×19+37.9×6.4
=6.4×(3.6+37.9)+3.6×(20-1)
=6.4×41.5+3.6×(20-1)
=6.4×(40+1+0.5)+3.6×(20-1)
=256+6.4+3.2+72-3.6
=256+72+6.4+3.2-3.6
=328+9.6-3.6
=328+6
=334
=3又3/5×25又2/5+37.9×6又2/5
=3.6×(19+6.4)+37.9×6.4
=3.6×6.4+3.6×19+37.9×6.4
=6.4×(3.6+37.9)+3.6×(20-1)
=6.4×41.5+3.6×(20-1)
=6.4×(40+1+0.5)+3.6×(20-1)
=256+6.4+3.2+72-3.6
=256+72+6.4+3.2-3.6
=328+9.6-3.6
=328+6
=334
第2个回答 2013-06-05
=3.6×25.4+37.8×6.4
=3.6×25.4+(25.4+12.5)×6.4
=25.4×(3.6+6.4)+12.5×6.4
=254+(10+2.5)×6.4
=254+64+2.5×6.4
=254+64+2.5×4×1.6
=254+64+14
=254+80=334
=3.6×25.4+(25.4+12.5)×6.4
=25.4×(3.6+6.4)+12.5×6.4
=254+(10+2.5)×6.4
=254+64+2.5×6.4
=254+64+2.5×4×1.6
=254+64+14
=254+80=334