题目内容
用简便方法计算.
1.89×5.1+4.9×1.89
答案:
解析:
解析:
|
1.89×5.1+4.9×1.89 =1.89×(5.1+4.9) =1.89×10 =18.9 |
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题目内容
用简便方法计算.
1.89×5.1+4.9×1.89
|
1.89×5.1+4.9×1.89 =1.89×(5.1+4.9) =1.89×10 =18.9 |