⑴ 7142.85÷3.7÷2.7×1.7×0.7
来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/10/08 00:23:56
⑴ 7142.85÷3.7÷2.7×1.7×0.7
⑵ 4.83×0.59+0.41×1.59+0.324×5.9
⑶ 99×1.01×77.78+66.66×33.33
⑷ 37.4×2.7+499×0.73+12.5×0.7
⑵ 4.83×0.59+0.41×1.59+0.324×5.9
⑶ 99×1.01×77.78+66.66×33.33
⑷ 37.4×2.7+499×0.73+12.5×0.7
(1)7142.85÷3.7÷2.7×1.7×0.7.
=7142.85÷37÷27×17×7
=7142.85×7÷999×17
=49999.95÷999×17
=50.05×17
=850.85
(2)4.83*0.59+0.41*1.59-0.324*5.9
=4.83*0.59+0.41*(1+0.59)-0.324*(10*0.59)
=4.83*0.59+0.41+0.41*0.59-3.24*0.59
=(4.83+0.41-3.24)*0.59+0.41
=2*0.59+0.41
=1.18+0.41
=1.59
(3)99×1.01×77.78+66.66×33.33
=99×(1+0.01)×77.78+33.33×(2+1)
=99.99×77.78+99.99
=99.99×78.78
=(100-0.01)×78.78=7878-0.7878
(4)37.4×2.7+499×0.73+12.5×0.7
=37.4*2+37.4*0.7+499*0.73+12.5*0.7
=37.4*2+(37.4+12.5)*0.7+499*0.73
=37.4*2+49.9*0.7+499*0.73
=37.4*2+499*0.07+499*0.73
=37.4*2+499*(0.07+0.73)
=37.4*2+499*0.8
=37.4*2+(500-1)*0.8
=37.4*2-0.4*2+400
=37*2+400
=474
=7142.85÷37÷27×17×7
=7142.85×7÷999×17
=49999.95÷999×17
=50.05×17
=850.85
(2)4.83*0.59+0.41*1.59-0.324*5.9
=4.83*0.59+0.41*(1+0.59)-0.324*(10*0.59)
=4.83*0.59+0.41+0.41*0.59-3.24*0.59
=(4.83+0.41-3.24)*0.59+0.41
=2*0.59+0.41
=1.18+0.41
=1.59
(3)99×1.01×77.78+66.66×33.33
=99×(1+0.01)×77.78+33.33×(2+1)
=99.99×77.78+99.99
=99.99×78.78
=(100-0.01)×78.78=7878-0.7878
(4)37.4×2.7+499×0.73+12.5×0.7
=37.4*2+37.4*0.7+499*0.73+12.5*0.7
=37.4*2+(37.4+12.5)*0.7+499*0.73
=37.4*2+49.9*0.7+499*0.73
=37.4*2+499*0.07+499*0.73
=37.4*2+499*(0.07+0.73)
=37.4*2+499*0.8
=37.4*2+(500-1)*0.8
=37.4*2-0.4*2+400
=37*2+400
=474
⑴ 7142.85÷3.7÷2.7×1.7×0.7
7142.85÷3.7÷2.7×1.7×0.7
7142.85÷3.47÷2.7×1.7×0.7
7142.85÷3.7÷2.7×1.7×0.7的巧算问题 一定要有过程具体!
7142.85/3.7/2.7*1.7*0.7是多少
7142.85除以3.7除以2.7乘以1.7乘以0.7等于多少?
2.1×5.1×159.1÷0.7÷1.7÷3.7(简便计算)
3.2×0.7+5.4÷1.7简便计算
66.6666÷12.5÷3.7÷0.8÷0.3
简算9.18÷1.7+37.5÷1.5
1.25×1.7×8÷1.7简便计算
35.4-12.5÷25+1.7