15 (0.15*0.4)=简便运算
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(0.8x12.5)x(0.25x0.4)
4*6*3*5再答:30*12再答:360
4.8÷(2.5×0.4)
20×[(2.44-1.8)÷0.4+0.15]=20×(0.64÷0.4+0.15)=20×1.6+20×0.15=32+3=35777×9+1111×3=777×(10-1)+3333=7770-
(61.3/100)*15+15*1.387=(0.613+1.387)*15=2*15=30
(12*21*45*10.2)/(15*0.7*51)=(3*4*3*7*5*9*10.2)/(3*5*7*0.1*3*17)=(4*9*10.2)/(0.1*17)=(4*9*17*6*0.1)/(
20.5-(3.64+2.8)除以0.4=20.5-(36.4-28)除以4=20.5-(9.1+7)=20.5-16.1=4.4
507/(100*3*5)=169/500=338/1000=0.338
10.75+0.4-9.473=10+0.75+0.4-(10-0.527)=10+0.75+0.4-10+0.527=1.15+0.527=1.677
10.75+0.4-9.473=10+0.75+0.4-(10-0.527)=10+0.75+0.4-10+0.527=1.15+0.527=1.677
10.75+0.4-9.86=(10+0.75)+0.4+(0.14-10)=0.75+0.4+0.14=1.29
21分之8=X分之0.48/21=0.4/x0.4×21=8x0.1×21=2x2.1=2XX=1.05再问:1.05化成分数是多少?再答:21分之20祝你学业进步!!
原式=(2-0.1)+(20-0.1)+(200-0.1)+(2000-0.1)+0.4=2+20+200+2000-0.4+0.4=2222
2.73×8.5+15×27.3=27.3×0.85+15×27.3=27.3×(0.85+15)=27.3×15.85=432.705再问:再说一下题目2.73×8.5+15×0.273·~(j简便
3×(9分之2+15分之2)-0.4=3×2/9+3×2/15—0.4=2/3+2/5—2/5=2/30.75×7分之5+7分之2÷3分之4=3/4×7分之5+7分之2×3/4=3/4×(5/7+2/
15÷0.15×0.4=100×0.4=40再问:15除以0.25简便计算
再答:我的回答满意吗?再答:采纳吧再答:还有疑问吗?再答:采纳吧再答:求好评!
(430-140+60)×15=(430+60-140)*15=(490-140)*15=350*15=5250
19.6÷0.4÷0.5=19.6÷(0.4x0.5)=98再答:明白请采纳
4.78x(0.5x0.5x0.4)=4.78x0.1=0.478