计算(1)(212)×(-15)×(-313);(2)(-513)×(+178)×(-215);(3)(-0.1)×(-0.001)×(-100)×(-1000...

2023-07-09 04:34发布

这道初中数学的题目是:
计算(1)(2
1
2
)×(-
1
5
)×(-3
1
3
);
(2)(-5
1
3
)×(+1
7
8
)×(-2
1
5
);
(3)(-0.1)×(-0.001)×(-100)×(-1000);
(4)(6
1
3
-8
1
4
)×1
1
2

(5)2÷(-
3
7
)×
4
7
÷(-5
1
7
);
(6)-1+5÷(-
1
6
)×(-6).
1条回答
走过
1楼-- · 2023-07-09 04:57
这道初中数学题的正确答案为:
(1)(2
1
2
)×(-
1
5
)×(-3
1
3
)=
5
2
×
1
5
×
10
3
=
5
3

(2)(-5
1
3
)×(+1
7
8
)×(-2
1
5
)=
16
3
×
15
8
×
11
5
=22;
(3)(-0.1)×(-0.001)×(-100)×(-1000)=0.1×100×0.001×1000=10;
(4)(6
1
3
-8
1
4
)×1
1
2
=
19
3
×
3
2
-
33
4
×
3
2
=
19
2
-
99
8
=-
23
8

(5)2÷(-
3
7
)×
4
7
÷(-5
1
7
)=2×
7
3
×
4
7
×
7
36
=
14
27

(6)-1+5÷(-
1
6
)×(-6)-1+5×6×6=-1+180=-179.
解题思路 12

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