9⼀2÷[(1⼀2+3⼀4)x6⼀5]有简便算法吗?是什么?请列式回答一下

2024-11-03 05:22:38
推荐回答(2个)
回答1:

脱式计算9÷2÷((1÷2+3÷4)×6÷5)
解题思路:四则运算规则(按顺序计算、先算乘除后算加减,有括号先算括号,有乘方先算乘方)即脱式运算(递等式计算)需在该原则前提下进行
解题过程:

9/2÷((1/2+3/4)×6/5)

=9/2÷((2/4+3/4)×6/5)

=9/2÷(5/4×6/5)

=9/2÷3/2

=9/2×2/3

=3

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回答2:

9/2÷[(1/2+3/4)x6/5]
=9/2÷[(2/4+3/4)x6/5]
=9/2÷[5/4x6/5]
=9/2÷3/2
=3