题目内容

0.1×0.1+0.9=
0.91
0.91
．
分析：本题要先算乘法，再算加法．
解答：解：0.1×0.1+0.9
=0.01+0.9，
=0.91．
故答案为：0.91．
点评：完成小数乘法时，要注意小数点位置的变化，完成小数加减法时，要注意小数点的对齐．
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解方程
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计算下面各题，怎样算简便怎样算．
226÷2+14×5     		 8×（
3
4
-
3
8
）    
1÷（1-0.9）
4
5
×
6
7
÷
4
5
×
6
7

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