乘法,三题
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乘法,三题
乘法,三题
乘法,三题
(1)25*32*125
=25*4*8*125
=100*1000
=100000
2)125*3+125*5+25*3+25
=25*15+25*25+25*3+25
=25(15+25+3+1)
=25*44
=25*4+25*40
=100+1000
=1100
3)13.75-(3.75+6.48)
=13.75-3.75-6.48
=10-6.48
=3.52
题呢?????????