计算:(1)-3-6+9-11+2(2)(16-34+112)×(-36)×(-24)(3)(-10)-(-10)×12÷2×(-20)(4)(-1)3-(1-...

2023-07-11 14:47发布

这道初中数学的题目是:
计算:
(1)-3-6+9-11+2
(2)(
1
6
-
3
4
+
1
12
)×(-36)
×(-24)
(3)(-10)-(-10)×
1
2
÷2×(-20)
(4)(-1)3-(1-0.5)×
1
3
×[2-(-3)2]

(5)(-12)÷(-
1
12
)÷(-100)
(6)8+(4-5)÷0.1
(7)-14-(1-0.5)×[2-(-3)2]
(8)36×(
1
2
-
1
3
)2

(9)3.14×(-5)+3.14×(-12)+3.14×8
1条回答
we45
1楼-- · 2023-07-11 14:55
这道初中数学题的正确答案为:
(1)原式=(-3-6-11)+(2+9)
=-20+11
=-9;
(2)原式=
1
6
×(-24)-
3
4
×(-24)+
1
12
×(-24)
=-4+18-2
=14-2
=12;
(3)原式=-10-(-5)×
1
2
×(-20)
=-10-50
=-60;
(4)原式=-1-
1
2
×
1
3
×
(2-9)
=-1+
7
6

=
1
6

(5)原式=(-12)×(-12)×(-
1
100
)

=144×(-
1
100
)

=-1.44;
(6)原式=8+(-1)×10
=8-10
=-2;
(7)原式=-1-
1
2
×(2-9)

=-1+
7
2

=
5
2

(8)原式=36×(
1
6
)2

=36×
1
36

=1;
(9)原式=3.14×(-5-12+8)
=3.14×(-9)
=-28.26.
解题思路 16

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