=1.78x9.9+1.78x0.1
=1.78x（9.9+0.1）
=1.78x10
=17.8本回答被网友采纳
=1.78x(9.9+0.1)
=1.78ⅹ10
=17.8
0.178=0.1x1.78
所以1.78X9.9+0.178=1.78x9.9+1.78x0.1
=1.78x（9.9+0.1）
=1.78x10
=17.8
1.78X9.9+0.178简便计算
1.78X9.9+0.178简便计算 =1.78x9.9+1.78x0.1 =1.78x（9.9+0.1）=1.78x10 =17.8
1.78×9.9+0.178简算
1.78*9.9 0.178 =1.78*9.9 1.78*0.1 =1.78*(9.9 0.1)=1.78*10 =17.8
1.78x9.9 +17.8简算怎么答
1.78x9.9 +17.8 =17.8×0.99+17.8 =17.8×（0.99+1）=17.8×（2-0.01）=35.6-0.178 =35.422
1.78乘9.9的简便计算?
答：1.78*（10-0.1）=1.78*10-1.78*0.1 =17.8-0.178 =17.622
1.78x9.9的简便运箅
1.78*9.9=1.78*（10-0.1）=17.8-0.178=17.622
7.18×9.9 0.178简便算法
7.18×9.9+0.178 =7.18×9.9+1.78×0.1 =7.18×10-7.18×0.1+1.78×0.1 =71.8-5.4×0.1 =71.8-0.54 =71.26 望采纳，谢谢！
1.78*10.1-1.78简便计算
1.78*10.1-1.78简便计算 =1.78(10.1-1)=1.78x0.1 =0.178
1.78×10.1-17.8×0.1简便?
简便计算方法如下 1、提取原式：1.78×10.1-17.8×0.1 2、计算过程：=1.78×10.1-1.78 =1.78×10+1.78×0.1-1.78 =17.8+0.178-1.78 =17.978-1.8+0.02 =16.178+0.02 =16.198 3、计算结果：16.198 4、谢谢，期待您的采纳。
1.78x1.1-1.78最简单法
=1.78×（1.1-1）=1.78×0.1=0.178
1.89x178.178+0.49-1.78x189.189用简便方法算
1.89x178.178+0.49-1.78x189.189 =1.89x178x1.001-1.78x189x1.001+0.49 =（1.89x178-1.78x189)x1.001+0.49=0.49
