计算:(1)-5+3-(-3)(2)?32+(?512)+52+(?712) (3)0.9×(-4)÷(-6)(4)25?|?112|?(+214)?(?2
计算:(1)-5+3-(-3)(2)?32+(?512)+52+(?712)(3)0.9×(-4)÷(-6)(4)25?|?112|?(+214)?(?2.75)(5)(...
计算:(1)-5+3-(-3)(2)?32+(?512)+52+(?712) (3)0.9×(-4)÷(-6)(4)25?|?112|?(+214)?(?2.75) (5)(23?112?115)×(?60) (6)(?25)÷54×45÷(?16).
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用户竹舞7191
推荐于2016-01-08
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(1)-5+3-(-3)
=-5+3+3
=1;
(2)
?+(?)++(?) =(-
+
)+(-
-
)
=1-1
=0;
(3)0.9×(-4)÷(-6)
=(-3.6)÷(-6)
=0.6;
(4)
?|?1|?(+2)?(?2.75) =
-1.5+0.5
=
-1
=-0.6;
(5)
(??)×(?60)=-
×60+
×60+
×60
=-40+5+4
=-31;
(6)
(?25)÷×÷(?16)=25×
×
×
=1.
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