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计算:(1)-40-28-(-19)+(-24)(2)76×(16-13)×314÷35(3)-14-16×[3-(-3)2](4)-12+33×
计算:(1)-40-28-(-19)+(-24)(2)76×(16-13)×314÷35(3)-14-16×[3-(-3)2](4)-12+33×(1-23)+(-2)2...
计算:(1)-40-28-(-19)+(-24)(2)76×(16-13)×314÷35(3)-14-16×[3-(-3)2](4)-12+33×(1-23)+(-2)2.
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(1)-40-28-(-19)+(-24)
=-40-28+19-24
=-92+19
=-73;
(2)
×(
-
)×
÷
=
×(-
)×
×
=-
;
(3)-14-
×[3-(-3)2]
=-1-
×[3-9]
=-1-
×(-6)
=-1+1
=0;
(4)-12+33×(1-
)+(-2)2.
=-1+27×
+4
=-1+9+4
=12.
=-40-28+19-24
=-92+19
=-73;
(2)
7 |
6 |
1 |
6 |
1 |
3 |
3 |
14 |
3 |
5 |
=
7 |
6 |
1 |
6 |
3 |
14 |
5 |
3 |
=-
5 |
72 |
(3)-14-
1 |
6 |
=-1-
1 |
6 |
=-1-
1 |
6 |
=-1+1
=0;
(4)-12+33×(1-
2 |
3 |
=-1+27×
1 |
3 |
=-1+9+4
=12.
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