(4⼀9×7⼀8-1⼀3)×9⼀4用简便方法怎么做?

2024-11-17 19:51:13
推荐回答(3个)
回答1:

见图

回答2:

(4/9×7/8-1/3)×9/4
=4/9x7/8x9/4-1/3x9/4
=7/8-3/4
=7/8-6/8
=1/8

回答3:

(4/9×7/8-1/3)×9/4
=4/9×7/8×9/4-1/3×9/4
=7/8-3/4
=7/8-6/8
=1/8