问题 解答题
计算:(+0.25)-(-3
1
8
)-(+5
3
4
)-(+
1
4
答案

(+0.25)-(-3

1
8
)-(+5
3
4
)-(+
1
4
),

=0.25+3

1
8
-5
3
4
-0.25

=(0.25-0.25)-(5

3
4
-3
1
8
),

=-(5

6
8
-3
1
8
),

=-2

5
8

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