计算:(1)-(-2)+(-3)(2)(?81)÷94×49÷(?16)(3)112×57?(?57) ×212+(?12) ÷125 (4)?16÷(
计算:(1)-(-2)+(-3)(2)(?81)÷94×49÷(?16)(3)112×57?(?57)×212+(?12)÷125(4)?16÷(?2)3?|?116|×...
计算:(1)-(-2)+(-3)(2)(?81)÷94×49÷(?16)(3)112×57?(?57) ×212+(?12) ÷125 (4)?16÷(?2)3?|?116| ×(?8)+[1?(?3)2].
展开
之盐福2277
2014-09-11
·
超过71用户采纳过TA的回答
关注
(1)-(-2)+(-3)
=2+(-3)
=-(3-2)
=-1;
(2)
(?81)÷×÷(?16)=(-81)×
×
×(-
)
=1;
(3)
1×?(?) ×2+(?) ÷1=
1×?(?) ×2+(?) ×=
1×+×2+(?) ×=
×(
+
-
)
=
×
=
;
(4)
?16÷(?2)3?|?| ×(?8)+[1?(?3)2]=-16÷(-8)+
×8+(1-9)
=2+
+(-8)
=-5
.
收起
为你推荐: