题目内容
根据49×45=2205,直接写出下列各算式的积.
4.9×45=________
4.9×0.45=________
0.49×450=________
0.49×0.45=________
0.049×450=________
0.049×0.045=________
答案:220.5,2.205,220.5,0.2205,22.05,0.002205
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题目内容
根据49×45=2205,直接写出下列各算式的积.
4.9×45=________
4.9×0.45=________
0.49×450=________
0.49×0.45=________
0.049×450=________
0.049×0.045=________