(0.25+0.48)*4 (0.36+1.29)/3
40*28*25 39*199+39
27*99 5.34*1.8+5.34*7.2+5.24
脱式计算
43.8/[(1.32-0.24)*5]
急要步骤
可分开答43.8/[52.4-(23.1+4.7)]解方程不要步骤
0.05(x+7)=35 (x+4)/5=6
解:0.05x+0.35=35 解:x+4=30
0.05x=34.65 x=26
x=693
x/5+9=21 0.36x=72 (200-x)/5=30
解:x=(21-9)*5 解:x=200 解:200-x=150
x=60 x=50
简算:0.65*102=0.65*100+0.65*2=65+1.3=66.3
9.89-(5.87+2.9)=9.87-5.87-2.9=4-2.9=1.1
(0.25+0.48)*4=0.25*4+0.28*4=1+1.12=2.12
(0.36+1.29)/3=0.36/3+1.29/3=0.12+0.43=0.55
40*28*25=40*25*28=1000*28=28000
39*199+39=39*199+39*1=39*(199+1)=39*200=7800
27*99=27*(100-1)=27*100-27=2700-27=2673
5.34*1.8+5.34*7.2+5.24=5.34*(1.8+7.2)+5.24=5.34*10+5.24=53.4+5.24=58.64
脱式计算:
43.8/[(1.32-0.24)*5]
=43.8/[1.08*5]
=43.8/5.4
≈8.1得数为无限纯循环小数
很高兴为你解决问题,如果对你有帮助,欢迎采纳
解:0.05x+0.35=35 解:x+4=30
0.05x=34.65 x=26
x=693
x/5+9=21 0.36x=72 (200-x)/5=30
解:x=(21-9)*5 解:x=200 解:200-x=150
x=60 x=50
简算:0.65*102=0.65*100+0.65*2=65+1.3=66.3
9.89-(5.87+2.9)=9.87-5.87-2.9=4-2.9=1.1
(0.25+0.48)*4=0.25*4+0.28*4=1+1.12=2.12
(0.36+1.29)/3=0.36/3+1.29/3=0.12+0.43=0.55
40*28*25=40*25*28=1000*28=28000
39*199+39=39*199+39*1=39*(199+1)=39*200=7800
27*99=27*(100-1)=27*100-27=2700-27=2673
5.34*1.8+5.34*7.2+5.24=5.34*(1.8+7.2)+5.24=5.34*10+5.24=53.4+5.24=58.64
脱式计算:
43.8/[(1.32-0.24)*5]
=43.8/[1.08*5]
=43.8/5.4
≈8.1得数为无限纯循环小数
很高兴为你解决问题,如果对你有帮助,欢迎采纳
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第1个回答 2013-03-05
0.05(x+7)=35 x=693
(x+4)/5=6 x=26
x/5+9=21 x=60
0.36x=72 x=200
(200-x)/5=30 x=50
0.65*102=0.65*100+0.65*2=66.3
9.87-(5.87+2.9)=9.87-5.87-2.9=1.1
(0.25+0.48)*4=0.25*4+0.48*4=2.92
(0.36+1.29)/3=0.36/3+1.29/3=0.12+0.43=0.55
40*28*25=4*25*280=28000
39*199+39=39*(199+1)=39*200=7800
27*99=27*(100-1)=2700-27=2673
5.34*1.8+5.34*7.2+5.24=5.34*(1.8+7.2+1)-0.1=53.4-0.1=53.3
43.8/[(1.32-0.24)*5]=43.8/(1.08*5)=43.8/5.4=8.1111111111....本回答被提问者采纳
(x+4)/5=6 x=26
x/5+9=21 x=60
0.36x=72 x=200
(200-x)/5=30 x=50
0.65*102=0.65*100+0.65*2=66.3
9.87-(5.87+2.9)=9.87-5.87-2.9=1.1
(0.25+0.48)*4=0.25*4+0.48*4=2.92
(0.36+1.29)/3=0.36/3+1.29/3=0.12+0.43=0.55
40*28*25=4*25*280=28000
39*199+39=39*(199+1)=39*200=7800
27*99=27*(100-1)=2700-27=2673
5.34*1.8+5.34*7.2+5.24=5.34*(1.8+7.2+1)-0.1=53.4-0.1=53.3
43.8/[(1.32-0.24)*5]=43.8/(1.08*5)=43.8/5.4=8.1111111111....本回答被提问者采纳