（洞仔笑漏20+4）纳升汪x25=20x25+4x25=500+100=60035x37+65x37=(35+65)x37=100x37=370025x41=25x(40+1)=25x40+25x1=1000+25=102532x(200+3)=32x200+32x3=6400+96=649638x29+38=38x(29+1)=38x30=114039x101=39x(100+1)=39x100+39x1=3900+39=3939
四年级上册数学书答案
Simone
发布于 2023-07-18 23:02:58
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