2×78×50用简便方法计算脱式计算
第1个回答 2016-09-24
2×78×50用简便方法计算脱式计算
2×78×50
=2×50×78
=100×78
=7800本回答被网友采纳
2×78×50
=2×50×78
=100×78
=7800本回答被网友采纳
第2个回答 2016-09-24
2x78x50
=2x50x78
=100x78
=7800
=2x50x78
=100x78
=7800
第3个回答 2016-09-24
2x78x50
=(2x50)x78
=100x78
=7800
=(2x50)x78
=100x78
=7800
第4个回答 2016-09-24
2×78×50
=2×50×78
=100×78
=7800
=2×50×78
=100×78
=7800