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计算:(1)-40-(-19)+(-24)(2)(-5)×(-8)-(-28)÷4(3)(12+56?712)×12(4)-22-(-2)2-2
计算:(1)-40-(-19)+(-24)(2)(-5)×(-8)-(-28)÷4(3)(12+56?712)×12(4)-22-(-2)2-23×(-1)2011(5)...
计算:(1)-40-(-19)+(-24)(2)(-5)×(-8)-(-28)÷4(3)(12+56?712)×12(4)-22-(-2)2-23×(-1)2011(5)?32÷94+|-4|×0.52+229×(-112)2.
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(1)-40-(-19)+(-24)
=-40+19-24
=-45;
(2)(-5)×(-8)-(-28)÷4
=40+7
=47;
(3)(
+
?
)×12
=6+10-7
=9;
(4))-22-(-2)2-23×(-1)2011
=-4-4+8,
=0;
(5)?32÷
+|-4|×0.52+2
×(-1
)2
=-4+1+5
=2.
=-40+19-24
=-45;
(2)(-5)×(-8)-(-28)÷4
=40+7
=47;
(3)(
1 |
2 |
5 |
6 |
7 |
12 |
=6+10-7
=9;
(4))-22-(-2)2-23×(-1)2011
=-4-4+8,
=0;
(5)?32÷
9 |
4 |
2 |
9 |
1 |
2 |
=-4+1+5
=2.
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