计算(1)-17+23+(-16)(2)3-2×(-5)2(3)(-6)×(-2)+4÷(-2)2(4)66×(12-13×511)(5)
计算(1)-17+23+(-16)(2)3-2×(-5)2(3)(-6)×(-2)+4÷(-2)2(4)66×(12-13×511)(5)-12×58-|-5|×(-2)...
计算(1)-17+23+(-16)(2)3-2×(-5)2(3)(-6)×(-2)+4÷(-2)2(4)66×(12-13×511)(5)-12×58-|-5|×(-2)2+4(6)-32×12-(-3)2÷(-1)2007+327.
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血刺晓星ulCJ
2014-10-29
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(1)-17+23+(-16),
=-17+(-16)+23,
=-33+23,
=-10,
(2)3-2×(-5)
2
=3-2×25,
=3-50,
=-47;
(3)(-6)×(-2)+4÷(-2)
2=12+4÷4,
=12+1,
=13,
(4)66×(
-
×
),
=66×
-66×
×
,
=33-10,
=23;
(5)-1
2×
-|-5|×(-2)
2+
,
=-
-5×4+2,
=-18
;
(6)-3
2×
-(-3)
2÷(-1)
2007+
.
=-9×
-9÷(-1)+3,
=-
+9+3,
=
.
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