例:2.1×9=18.9;3.21×9=28.89;4.321×9=38.889;5.4321×9=48.8889.求6.54321×9=?;7.654321×9=?
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例:2.1×9=18.9;3.21×9=28.89;4.321×9=38.889;5.4321×9=48.8889.求6.54321×9=?;7.654321×9=?
例:2.1×9=18.9;3.21×9=28.89;4.321×9=38.889;5.4321×9=48.8889.求6.54321×9=?;7.654321×9=?
例:2.1×9=18.9;3.21×9=28.89;4.321×9=38.889;5.4321×9=48.8889.求6.54321×9=?;7.654321×9=?
58.88889
68.888889
例:2.1×9=18.9;3.21×9=28.89;4.321×9=38.889;5.4321×9=48.8889.求6.54321×9=?;7.654321×9=?
2.1×9= ()×9 3.21×9= ()×9= 4.321×9= .2.1×9= ()×93.21×9= ()×9=4.321×9= .
2.1*0.9/0.1=18.9 3.21*0.9/0.01=288.9的规律是什么
9(x+1.1)=18.9解方程
18x-9x=18.9
9(x+11)=18.打错了,是9(x+1.1)=18.9
9x-8乘1.2=2.1
14x-8.4=9x+2.1 解方程
8.15=几分之几,还有1.07=几分之几,2.125=几分之几,2.1=几分之几,3.21=几分之几
9 9 9 9 9 = 12
9x-0.9乘7=2x+2.1 x=?9x-0.9乘7=2x+2.1 x=?还有:3(2x-1.2)=2(x+3.5) x=?2.4x-9.8=1.4x-9
解比例 x:7.5=2.1:1.8 6.5x:3=10:9
方程10.8-2.1x=2.4 方程4×2.5=9x+1
3(X+2.1)=10.5和12X-9x=8.7如何检验!
3.21立方分米=()L()mL
12x-9x=8.7 6x+18=48 3(x+2.1)=10.5 x+4.8=7.2
(2.1乘10的5次方)除以(负7乘10的9次方)=多少
9χ-0.9×7=2χ﹢2.1 等于多少