计算(1)1+(-2)+|-2-3|-5-(-9)(2)113×(13?12)×311÷54(3)(512+23?34)×(?12)(4)0.25×(?2)3
计算(1)1+(-2)+|-2-3|-5-(-9)(2)113×(13?12)×311÷54(3)(512+23?34)×(?12)(4)0.25×(?2)3?[4÷(?...
计算(1)1+(-2)+|-2-3|-5-(-9)(2)113×(13?12)×311÷54(3)(512+23?34)×(?12)(4)0.25×(?2)3?[4÷(?23)2+1]+(?1)5.
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肆客1916
推荐于2016-06-26
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(1)1+(-2)+|-2-3|-5-(-9)
=1-2+5-5+9
=-1+0+9
=8;
(2)
×(?)×÷=
×(-
)×
×
=
×
×(-
)×
=1×(-
)
=-
;
(3)
(+?)×(?12)=-
×12-
×12+
×12
=-5-8+9
=-4;
(4)
0.25×(?2)3?[4÷(?)2+1]+(?1)5=-0.25×8-[4×
+1]-1
=-2-[9+1]-1
=-2-10-1
=-13.
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