8.9×0.045+0.89×0.42+0.089×1.3怎样算简便?
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8.9×0.045+0.89×0.42+0.089×1.3怎样算简便?8.9×0.045+0.89×0.42+0.089×1.3怎样算简便?8.9×0.045+0.89×0.42+0.089×1.3怎
8.9×0.045+0.89×0.42+0.089×1.3怎样算简便?
8.9×0.045+0.89×0.42+0.089×1.3怎样算简便?
8.9×0.045+0.89×0.42+0.089×1.3怎样算简便?
我会
原式=8.9×(0.045+0.042+0.013)
=8.9×0.1
=0.89
收起
把8.9,0.89,0.089都化成一个数
89x0、45+89x42+89x0.0013
(8.9×10)×(0.045÷10)+(0.89×100)×(0.42÷100)+(0.089×1000)×(1.3×1000)
8.9*(0.045+0.42%10+1.3%100)
8.9×0.045+0.89×0.42+0.089×1.3 如何简便计算
8.9×0.045+0.89×0.42+0.089×1.3怎样算简便?
估算(列竖式计算) 0.89X0.32≈ 0.42×3.8≈
估算(列竖式) 0.89×0.32≈ 0.42×3.8≈
第一题,估算.(列竖式计算) 0.89×0.32≈ 0.42×第一题,估算.(列竖式计算)0.89×0.32≈ 0.42×3.8≈
估算(列竖式计算) 0.89×0.32≈估算(列竖式计算)0.89×0.32≈0.42×3.8≈
1.估算(列竖式计算) 0.89×0.321.估算(列竖式计算)0.89×0.32 0.42×3.8
谁知道8.9x0.9+0.89的简便计算
=8.9*1/100/100*100*10=0.89公斤.
0.89+8.9+89+899+8999+89999+899999+8999999 并写出计算过程~
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