题目内容
0.
16×0.
5= ,
0.
16÷0.
5= .
| ||
| 60个0 |
| ||
| 60个0 |
0.
| ||
| 60个0 |
| ||
| 60个0 |
考点:乘除法中的巧算
专题:计算问题(巧算速算)
分析:(1)因为0.16×0.5=0.08,0.016×0.05=0.0008,0.0016×0.005=0.000008,…,由此可知,结果中小数点后面的个数等于两个因数后面的0的个数之和+1,据此解答.
(2)因为0.16÷0.5=0.32,0.016÷0.05=0.32,…,由此可知,当被除数和除数小数点后面的个数相同时,商不变,都等于0.32,据此解答.
(2)因为0.16÷0.5=0.32,0.016÷0.05=0.32,…,由此可知,当被除数和除数小数点后面的个数相同时,商不变,都等于0.32,据此解答.
解答:
解:(1)0.
16×0.
5=0.
.
(2)0.
16÷0.
5=0.32.
故答案为:0.
,0.32.
| ||
| 60个0 |
| ||
| 60个0 |
| ||
| 121个0 |
(2)0.
| ||
| 60个0 |
| ||
| 60个0 |
故答案为:0.
| ||
| 121个0 |
点评:此题解答的关键在于寻找规律,据规律解答.
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