7.5×3.1÷2.5×100的简便运算
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/17 15:16:08
(4.8×7.5×8.1)÷(2.4×2.5×2.7),=(4.8÷2.4)×(7.5÷2.5)×(8.1÷2.7),=2×3×3,=18.
223×7.5+22.3×12.5+230÷4-0.7×2.5+1=223×7.5+223×1.25+230×14-0.7×2.5+1=223×(7.5+1.25)+0.25×(230-7)+1=22
7.5*3.1/2.5*100=(7.5/2.5)*(3.1*100)=3*310=930
68-7.5+32-2.5=68-[7.5+2.5]+32=68+32-10=100-10=907.8*10.1=7.8×[10+0.1]=7.8×10+7.8×0.1=78+0.78=78.78希望
7.5×【63.9÷(9-4.5)】=7.5*{63.9÷9÷(1-0.5)}=7.5*7.1*2=15*7.1=71+35.5=106.5主要就是把4.5=9*0.563.9÷9很简单吧
(6.4×7.5×8.1)÷(3.2×2.5×2.7)=(6.4÷3.2)×(7.5÷2.5)×(8.1÷2.7)=2×3×3=18
7.5×[63.9÷(7-2.5)]=7.5×(63.9÷4.5)=7.5×14.2=106.526.19+0.91÷(3.6-2.9)=26.19+0.91÷0.7=26.19+1.3=27.49再
(4.8×7.5×8.1)÷(2.4×2.5×2.7)=(4.8×7.5×8.1)/(2.4×2.5×2.7)分数形式=(4.8÷2.4)×(7.5÷2.5)×(8.1÷2.7)=2×3×3=18
(4.8×7.5×8.1)÷(2.5×2.7×2.4)=(2×3×3)÷(1×1×1)=18
9.3÷3.1×2.5=3×2.5=7.5再问:5.6×5.8÷2.9的简便计算
0.072×87.5+8.75×0.28=0.72×0.1×87.5+8.75×0.28=(0.72+0.28)×8.75=1×8.75=8.757.5÷2.5÷0.4=7.5÷(2.5×0.4)=7
(9.1×7.5×4.6)÷(1.3×2.5×2.3)简便计算=(9.1/1.3)*(7.5/2.5)*(4.6/2.3)=7*3*2=42这是我在静心思考后得出的结论,如果不能请追问,我会尽全力帮您
2.5×64×1.25=2.5x8x(8x1.25)=20x10=2003.24×0.16+0.0324×84=3.24×0.16+3.24×0.84=3.24×(0.84+0.16)=3.247.5
7.5x+30=2.5x+1007.5x-2.5x=100-305x=70x=14
1.11(x-3)=5.5*4x-3=5.5*4/11x=5.5*4/11+3x=52.7.5x+30=2.5x+1007.5x-2.5x=100+305x=130x=26明白了么
您好:4.4×3.1÷3.1=4.4x1=4.437.3÷2.5÷4=37.3÷(2.5x4)=37.3÷10=3.7316.6×7÷0.83=16.6÷(0.83)x7=20x7=14094÷5÷0
1、7.5*3.1/2.5*100=7.5/2.5*3.1*100=3*3100=93002、36.5*6.2+28*0.365+3.65=36.5*6.2+2.8*3.65+3.65=3.65*(6
再答:亲,满意吗,别忘了好评哦
106*1.25-18÷7.5+2.4=(100+6)×1.25-2.4×7.5÷7.5+2.4=125+6×1.25-2.4+2.4=125+7.5=132.59.25+9.9+百分之九十二点五=9
150÷2.5-3.6×7.5=60-0.9×(4×7.5)=60-0.9×30=60-27=33