题目内容

【题目】

用你喜欢的方法计算:

39×

[+]÷

36×++

3﹣1.4÷

1××

÷÷

【答案】(139×

=38+1×

=38×+1×

=35+

=35

2[+]÷

=[]÷

=÷

=

336×++),

=36×+36×+36×

=16+30+10

=46+10

=56

4)(3﹣1.4÷

=1.6÷

=6

51××

=1×

=1×

=

6÷÷

=××

=××),

=×1

=

【解析】解:(139×

=38+1×

=38×+1×

=35+

=35

2[+]÷

=[]÷

=÷

=

336×++),

=36×+36×+36×

=16+30+10

=46+10

=56

4)(3﹣1.4÷

=1.6÷

=6

51××

=1×

=1×

=

6÷÷

=××

=××),

=×1

=

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