一点3×0点38 0点36×2点6-1点三能巧算吗?

2025-04-03 17:29:14
推荐回答(4个)
回答1:

依据题意列式计算如下:
1.3×0.38+0.36×2.6-1.3
=1.3×(0.38+0.36×2-1)
=1.3×0.1
=0.13

回答2:

1.3x0.38+0.36x2.6-1.3
=1.3x0.38+0.36x2x1.3-1.3
=1.3x(0.38+0.72-1)
=1.3x0.1
=0.13

回答3:

1.3x0.38+0.36x2.6-1.3
=1.3x0.38+1.3x2x0.36-1.3
=1.3x(0.38+0.72-1)
=1.3x0.1
=0.13

回答4:

巧算1.3×0.38+0.36×2.6-1.3
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:
1.3×0.38+0.36×2.6-1.3

=1.3×(0.38+0.36×2-1)

=1.3×0.1

=0.13

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