计算:(1)(?213)+(?56)+(?0.5)+(+116)(2)?13?(1+0.5)×13÷(?4)(3)(-1)3×(-5)÷[(-3)2+2×
计算:(1)(?213)+(?56)+(?0.5)+(+116)(2)?13?(1+0.5)×13÷(?4)(3)(-1)3×(-5)÷[(-3)2+2×(-5)](4)...
计算:(1)(?213)+(?56)+(?0.5)+(+116)(2)?13?(1+0.5)×13÷(?4)(3)(-1)3×(-5)÷[(-3)2+2×(-5)](4)3.34×(-22)+5.84×|-4|?(512?34+23)×12
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萌伊180
推荐于2016-03-13
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(1)
?2+
(?2)+(?)+(?0.5)+(+1),
=-
-
-
-
+,
=-5;
(2)-1
3-(1+0.5)×
÷(-4),
=-1-
×
×(-
),
=-1+
,
=
?;
(3)(-1)
3×(-5)÷[(-3)
2+2×(-5)],
=-1×(-5)÷(9-10),
=5÷(-1),
=-5;
(4)3.34×(-2
2)+5.84×|-4|
?(?+)×12,
=3.34×(-4)+5.84×4-5+9-8,
=(5.84-3.34)×4-4,
=2.5×4-4,
=6.
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