计算:(1)-9-(-7)+(-6)-(+4)-(-5)(2)-391516×4(3)-14-(-512)×411+(-2)3÷|-32+1|(4
计算:(1)-9-(-7)+(-6)-(+4)-(-5)(2)-391516×4(3)-14-(-512)×411+(-2)3÷|-32+1|(4)(59-34-118)...
计算:(1)-9-(-7)+(-6)-(+4)-(-5)(2)-391516×4(3)-14-(-512)×411+(-2)3÷|-32+1|(4)(59-34-118)÷(-136)
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(1)-9-(-7)+(-6)-(+4)-(-5)
=-9+7-6-4+5
=-19+12
=-7;
(2)-39
×4
=(-40+
)×4
=-40×4+
×4
=-160+
=-159
;
(3)-14-(-5
)×
+(-2)3÷|-32+1|
=-1+2-8÷|-9+1|
=-1+2-8÷8
=-1+2-1
=0;
(4)(
-
-
)÷(-
)
=(
-
-
)×(-36)
=-
×36+
×36+
×36
=-20+27+2
=9.
=-9+7-6-4+5
=-19+12
=-7;
(2)-39
15 |
16 |
=(-40+
1 |
16 |
=-40×4+
1 |
16 |
=-160+
1 |
4 |
=-159
3 |
4 |
(3)-14-(-5
1 |
2 |
4 |
11 |
=-1+2-8÷|-9+1|
=-1+2-8÷8
=-1+2-1
=0;
(4)(
5 |
9 |
3 |
4 |
1 |
18 |
1 |
36 |
=(
5 |
9 |
3 |
4 |
1 |
18 |
=-
5 |
9 |
3 |
4 |
1 |
18 |
=-20+27+2
=9.
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