(1)模镇2002×60066006—3003×40044004
=2×1001×6×10011001-3×1001×4×10011001
=(2×6)×1001×10011001-(3×4)×1001×10011001
=(12-12)×1001×10011001
=0
(2)行码世15×11.1÷3.75÷3.7
=(15÷3.75)×(11.1÷3.7)
=4×3=12
(档肢3)1.21÷14.3×13
=1.1×1.1×13÷(1.1×13)
=1.1
(1)=2002*3003*(20002-20002) = 0
(2)=(15/亮含枯老槐3.75)*(11.1/3.7) = 4*3 = 12
(3) = 13*0.11*11/敬洞(13*1.1) = 1.1
第一题
=2*1001*6*10011001-3*1001*4*10011001=(2*6-3*4)*1001*10011001=0
第陵早滚二尺余题
=15*3*3.7÷3÷1.25÷3.7=15÷1.25=12
第三题睁举
=1.1*1.1*13÷14.3=1.1*1.1*13÷13÷1.1=1.1
(1)解:原式=(1001×2)×(6×10011001)—(橘芹1001×3)银瞎×(4×10011001)=(1001×10011001)×(2×6)—(1001×10011001)×(3×4)=0
(圆搏毕2)将小数化为分数,再约分即可得解三分之四
(3)同上 解为11