720÷[(12-9)x12]简便计算?

2024-12-11 00:49:59
推荐回答(4个)
回答1:

按题中指定的运算顺序算最简便了。即先算小括号内的减法,再算中括号内的乘法,最后算除法。
解:720÷[(12-9)X12]
=720÷(3X12)
=720÷36
=20

回答2:

720÷[(12-9)X12]
=720÷(3X12)
=720÷36
=20

回答3:

解:720÷[(12-9)X12]
=720÷(3X12)
=720÷36
=20

回答4:

=720÷(3X12)
=720÷36
=20