45÷30x4,用简便方法运算?

2025-04-25 13:38:31
推荐回答(4个)
回答1:

45÷30x4
=45÷30x2x2
=45x2÷30x2
=90÷30x2
=3x2
=6

回答2:

45x2÷30x2=90÷30x2=6

回答3:

45÷30×4
=45×4÷30
=180÷30
=6

回答4:

45÷30×4
=45×4÷30
=180÷30
=6