50.4乘以1.9-1.8用简便运算怎么写
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25乘以3乘以100等于5乘以12乘以25乘以5再问:哎呀,都不够填的,这是四年级数学下册三单元智力冲浪再答:不晓得你总共要填多少个空格,总之前面有25,后面有个12,所以你前面填的值必须得能除尽12
再答:希望能帮到你,,望采纳~再问:竖试有没再答:我现在写再问:两个再问:竖试再问:哦再答:再答:再答:可以吗?再答:不懂可以追问~
2.5×0.6-1.8×0.5=0.5×5×0.6-1.8×0.5=0.5×3-1.8×0.5=0.5×(3-1.8)=0.5×1.2=0.6再问:那1。8乘以0.5那步怎么没有呢再答:不用再问:能不
19.99*36-199.99*1.8+1999*0.82=(20-0.01)*36-(200-0.1)*1.8+(2000-1)*0.82=20*36-0.36-200*1.8+0.18+2000*
100乘以(-2)乘以(-8)乘以0.01=(100×0.01)×(2×8)=1×16=16
0.79×1.9-1.79×1.35=0.79×1.9-(1+0.79)×1.35=0.79×1.9-0.79×1.35-1×1.35=0.79×(1.9-1.35)-1×1.35=0.79×0.55
857乘以1.9减8.57乘以80减85.7=85.7×19-52.7×8-85.7×1=85.7×(19-8-1)=85.7×10=857
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
加10%是乘以0.1好吧~依次类推!15%17%的管理费就是工程款总额乘0.15或0.17
1.8的百分之15是多少
=6.3*3*9+1.9*3*7=3*56.7+3*13.3=3*(56.7+13.3)=3*(70.0)=210
[1.9+19%乘以(5.8-4又5分之4)]除以(97乘以4分之1+70.2乘以0.25)=[1.9+19%×0]除以[0.25x(97+70.2)=1.9÷41.8=1/22再问:下面那个呢?再答
(3.4乘以4.8乘以9.5)除以(1.9乘以1.7乘以2.4)=(3.4/1.7)*(4.8/2.4)*(9.5/1.9)=2*2*5=20
7.6乘以7.3加上1.9乘以4乘以7.37.6×7.3+1.9×4×7.3=7.6×7.3+7.6×7.3=7.3×7.6×2=110.96
一个数乘以其一半,哈哈或者说,原来棒棒糖1块8毛钱,现在打9折.5年纪有小数不?我不知道.
【1.9+19%乘以(4.8-2.4)】除以(53乘以0.25+30.6乘以0.25)=【1.9*(1+0.24)】/【0.25*(53+30.6)】=1.9*1.24/(83.6/4)=2.356/
(1.25乘以2.7乘以5.7)/(8.1乘以0.25乘以1.9)上下各乘以10000:=(125*27*57)/(81*25*19)上下各除以25:=(5*27*57)/(81*19)再各除以27:
21.5乘以1.9加2.15乘以81=21.5×1.9+2.15×81=2.15×(19+81)=2.15×100=215;