计算(1)(+12)+(-7)-(+15)(2)(79-56+34)×(-36)(3)(-81)÷94×49÷(-136)(4)-14-16×[3-(-3)2]...

2023-07-07 17:38发布

这道初中数学的题目是:
计算
(1)(+12)+(-7)-(+15)
(2)(
7
9
-
5
6
+
3
4
)×(-36)

(3)(-81)÷
9
4
×
4
9
÷(-
1
36
)

(4)-14-
1
6
×[3-(-3)2]×(-2)
1条回答
黑狱☆擎天
2023-07-07 17:54
这道初中数学题的正确答案为:
(1)原式=12-7-15
=5-15
=-10;

(2)原式=
7
9
×(-36)-
5
6
×(-36)+
3
4
×(-36)
=-28+30-27
=-25;

(3)原式=(-81)×
4
9
×
4
9
×(-36)
=(-36)×
4
9
×(-36)
=(-16)×(-36)
=576;

(4)原式=-14-
1
6
×[3-9]×(-2)
=-14-
1
6
×(-6)×(-2)
=-1+1×(-2)
=-1-2
=-3.
解题思路 79

一周热门 更多>