题目内容

14.根据970.2÷9.9=98填空
97020÷990=98              0.9702÷0.0099=98
9702÷99=9897.02÷0.99=98        
97.02÷98=0.99         980×0.99=970.2
0.98×0.99=0.97020.0098×99=0.9702

分析 在除法算式中,被除数和除数同时扩大或缩小相同的倍数(0除外),商不变;
除数不变,被除数扩大或缩小几倍,商就扩大或缩小相同的倍数;
被除数不变,除数扩大则商反而缩小,除数缩小商就扩大,而且倍数也相同;
据此解答即可.

解答 解:根据970.2÷9.9=98可得:

97020÷990=98              0.9702÷0.0099=98
9702÷99=9897.02÷0.99=98        
97.02÷98=0.99         980×0.99=970.2
0.98×0.99=0.97020.0098×99=0.9702
故答案为:97020,0.0099,9702,98,97.02,0.99,0.99,0.99,0.9702,0.0098.

点评 此题考查了商的变化规律的灵活运用.

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