3⼀7×4⼀9×7⼀8×27⼀4用简便计算怎么算?

2024-12-30 02:23:20
推荐回答(3个)
回答1:

3/7×4/9×7/8×27/4
=3/7×7/8×4/9×27/4
=3/8 x 3
= 1又1/8

回答2:

3/7x4/9ⅹ7/8ⅹ27/4
=(3/7ⅹ7/8)x(4/9x27/4)
=3/8x3
=9/8

回答3:

3/7×4/9×7/8×27/4
=(3/7×7/8)×(4/9×27/4)
乘法结合律
=3/8×3
=9/8