用简便方法计算13乘101,99乘15,25乘104脱式乘法分配律
13Ã101
=13Ãï¼100+1ï¼
=13Ã100+13Ã1
=1300+13
=1313
99Ã15
=ï¼100-1ï¼Ã15
=100Ã15-1Ã15
=1500-15
=1485
25Ã104
=25Ãï¼100+4ï¼
=25Ã100+25Ã4
=2500+100
=2600
ä½ å¥½ï¼æ¬é¢å·²è§£çï¼å¦æ满æï¼è¯·ç¹å³ä¸è§âé纳çæ¡âï¼æ¯æä¸ä¸ã
=13Ãï¼100+1ï¼
=13Ã100+13Ã1
=1300+13
=1313
99Ã15
=ï¼100-1ï¼Ã15
=100Ã15-1Ã15
=1500-15
=1485
25Ã104
=25Ãï¼100+4ï¼
=25Ã100+25Ã4
=2500+100
=2600
ä½ å¥½ï¼æ¬é¢å·²è§£çï¼å¦æ满æï¼è¯·ç¹å³ä¸è§âé纳çæ¡âï¼æ¯æä¸ä¸ã
温馨提示:答案为网友推荐,仅供参考