0.87×7.13+8.7×0.187+0.87
来源:学生作业帮助网 编辑:作业帮 时间:2024/04/30 03:01:13
=8.7*2.5/10+8.7*7.5=8.7*(0.25+7.5)=8.7*7.75=64.425
8.7(0.25+7.5)=8.7*7.75=67.425
8.7×2.5+0.87×7.5=8.7×2.5+2.61×2.5=(8.7+2.61)×2.5=11.31X2.5X4/4=113.1/4=28.275
0.87×3.36+4.64×0.87=(3.36+4.64)×0.87=8×0.87=6.96
(13*13-)/7再问:什么叫13-)?再答:(13*13-1)/7再答:看到了没再问:嗯
0.87×3.36+4.64×0.87=0.87×(3.36+4.64)=0.87×8=6.96
两种方法1.0.87*2.5+0.87*10*7.5=0.87*(2.5+10*7.5)=0.87*77.52.0.87*2.5+8.7*3*2.5=2.5*(0.87+8.7*3)=2.5*(0.8
0.87乘以7.13加8.7乘以0.187加0.87=0.87*7.13+0.87+1.87+0.87=0.87*(7.13+1.87+1)=0.87*10=8.7
3.6*99+3.6=3.6*99+3.6*1=3.6*(99+1)=3.6*100=3602.8*99+28*0.1=2.8*99+2.8*1=2.8*(99+1)=2.8*100=28078*10
0.87×99+0.87=0.87×(99+1)=0.87×100=87.故答案为:0.87、100.
36.6-x=0x=36.6
2.4*1.8-4.8*0.4=2.4*2*1.8/2-4.8*0.4=4.8*0.6-4.8*0.4=4.8*(0.6-0.4)=4.8*0.2=2.43.7*8.7+6.2*8.7+0.87=3.
=0.87*(100+1)=0.87*100+0.87*1=87.87======12.5*0.8*4.7=10*4.7=47
0.87*65.5+37.5*0.87-3*0.87=0.87*(65.5+37.5-3)=0.87*100=87再问:..
0.87*2.5+8.7*7.5=8.7*2.5/10+8.7*7.5=8.7*(0.25+7.5)=8.7*7.75=73.675
8.7*7+0.87*17+0.087*130=8.7*7+8.7*1.7+8.7*1.3=8.7*(7+1.7+1.3)=8.7*10=87
0.87×2.3+8.7×77=0.87×2.3+0.87×770=0.87×(2.3+770)=0.87×772.3=671.901
8.7*9.9+0.87=8.7*(9.9+0.1)=8.7*10=8763/0.21/3=63/(21/100)/3=300/3=100
8.7*(10+0.1)-0.87=8.7*10+8.1*0.1-0.87=87
8.7%=0.0878分之17比2大所以8分之17>0.87(7循环)>0.87>8.7%