作业帮43×0.18-1.8×2.4 0.81×18的简便运算
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/18 00:46:29
再答：有问题下次直接发给我，加分哈
很高兴为您解答!首先,分解公因式,然后提取公因式；1.8=100*0.018;0.18=10*0.018100*0.62*0.018+10*0.018*3.9-0.0180.018*(62+39-1)
2.4×6÷1.8=0.8×【(3×6）÷1.8】=0.8×10=8
18*0.86+1.8*1.3+0.18=1.8*8.6+1.8*1.3+1.8×0.1=1.8×（8.6+1.3+0.1）=1.8×10=18
(3.6×7.5×1.2)÷(1.5×2.4×0.18)=（3.6÷0.18）×（7.5÷1.5）×（1.2÷2.4）=20×5×0.5=100×0.5=50
4.67*1.8+46.7*0.184.67*1.8+4.67*1.84.67*（1.8+1.8）4.67*3.616.812
2.25*1.8+12.5*0.18=2.25*1.8+1.25*1.8=1.8*(2.25+1.25)=1.8*3.5=6.3
2.25×1.8+1.25×0.18=2.25×1.8+1.25×1.8/10=2.25×1.8+0.125×1.8=(2.25+0.125)*1.8=2.375*1.8=4.275
2.25×1.8+27.5×0.18=2.25×1.8+2.75×1.8=1.8×（2.25+2.75）=1.8×5=9
3.25*1.8+67.5*0.18=3.25*1.8+6.75*1.8=(3.25+6.75)×1.8=10×1.8=18
0.075------------------24丿1.80168------------------120120----------------0
7.5×0.18+1.25×1.8=0.75×1.8+1.25×1.8=1.8×（0.75+1.25）=1.8×2=3.6
1.8×0.62+0.18×3.9-0.018＝0.018×62+0.018×39-0.018×1＝0.018×(62+39-1)＝0.018×100＝1.8
2.25X1.8=2.25X(2-0.2)=2.25X2-2.25X0.2=4.5-0,45=4.05同理1.25x0.18=1.25x(0.2-0.02)=1.25x0.2-1.25x0.02=0.
1.8×0.9+0.18=1.8*(0.9+0.1)=1.8*1=1.8
3.6乘2.4+0.36乘58+0.18乘36=3.6×2.4+3.6×5.8+3.6×1.8=3.6×(2.4+5.8+1.8)=3.6×10=36
2.25×1.8＋1.25×0.18=2.25*0.18*10+1.25*0.18=0.18*(2.25*10+1.25)=0.18*23.75=4.275
由题意得原式=3.6÷0.18×0.75÷1.5×1.2÷2.4=20×0.5×0.5=5