æ¹æ³1ï¼
4.8*7.8+78*0.52
=0.48x78+78x0.52
=78xï¼0.48+0.52ï¼
=78x1
=78
æ¹æ³2ï¼
4.8*7.8+78*0.52
=4.8x7.8+7.8x5.2
=7.8xï¼4.8+5.2ï¼
=7.8x10
=78
æ¹æ³3ï¼
4.8*7.8+78*0.52
=48x0.78+0.78x52
=0.78xï¼48+52ï¼
=0.78x100
=78
æåï¼è¯·é纳æ£ç¡®çæ¡ï¼ä½ 们åªæé®ï¼ä¸é纳æ£ç¡®çæ¡ï¼åçé½æ²¡æå²ï¼ï¼ï¼
æåï¼è¯·ãé纳çæ¡ãï¼æ¨çé纳æ¯æçé¢çå¨åï¼å¦æ没ææç½ï¼è¯·è¿½é®ã谢谢ã
温馨提示:答案为网友推荐,仅供参考