8乘(25乘39)简便脱试
8x(25x39)
=8x25x39
=(25x4)x(2x39)
=100x780
=78000
=8x25x39
=(25x4)x(2x39)
=100x780
=78000
温馨提示:答案为网友推荐,仅供参考
第1个回答 2017-05-05
8×(25×39)
=8×25×39
=200×39
=7800
=8×25×39
=200×39
=7800