问题
解答题
计算题: (1)(-26.54)+(-6.4)-18.54+6.4; (2)(-2)4×(-1
(3)-
|
答案
(1)(-26.54)+(-6.4)-18.54+6.4
=(-26.54)-18.54+(-6.4)+6.4
=-45.08;
(2)(-2)4×(-1
)2+(-3)3÷11 2 4 5
=16×
-27×9 4 5 9
=36-15
=21;
(3)-
+(0.3×31 12
+1 3
)÷|-4|1 3
=-
+(1+1 12
)÷41 3
=-
+1 12
÷44 3
═-
+1 12
.1 3
=1 4