计算:(1)-4.2+5.7-8.4+10(2)|-1-(-53)|-|-116-76|(3)(34?56+712)÷32(4)|?0.75|+(?3)?(?0.2
计算:(1)-4.2+5.7-8.4+10(2)|-1-(-53)|-|-116-76|(3)(34?56+712)÷32(4)|?0.75|+(?3)?(?0.25)+...
计算:(1)-4.2+5.7-8.4+10(2)|-1-(-53)|-|-116-76|(3)(34?56+712)÷32(4)|?0.75|+(?3)?(?0.25)+|?18|+78(5)-12+[134+8×(-3)]×0-(-5)2
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哎呀呀呀120
2014-08-15
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(1)-4.2+5.7-8.4+10,
=-4.2-8.4+5.7+10,
=-12.6+15.7,
=3.1;
(2)|-1-(-
)|-|-
-
|,
=-1+
-3,
=-2
;
(3)橘行(
?+)÷
,
=(
?+)×
,
=
×-
×+
×,
=
-
+
,
=
;
(4)
|?0.75|+(?3)?(?0.25)+|?|+,
=
-3+
+1,
=-1;
(5)-1
2+[
1+8×(-3)圆埋哗]×0-(-5)液前
2,
=-1+0-25,
=-26.
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