问题
解答题
计算 (1)-16-(-
(2)-16-(0.5-
(3)(-1)2008+(-5)×[(-2)3+2]-(-4)2÷(-
(4)[-38-(-1)7+(-3)8]×[-1
|
答案
(1)原式=-1-
×9 4
+6×2 9
=-1-27 8
+1 2
=81 4
;75 4
(2)原式=-1-(
-1 2
)×3×(-2-27)-(2 3
-1 8
)=-1-(-1 4
)×(-29)+1 6
=-1 8
+35 6
=-1 8
;137 24
(3)原式=1-5×(8+2)-16×(-2)=1-50+32=-17;
(4)原式=1×[-
+7 4
×(-7 2
)-125]=-21 2
-7 4
-147 4
=-500 4
.654 4