问题
解答题
计算,能简算的要简算. (1)6÷(0.4÷16) (2)(
(3)
|
答案
(1)6÷(0.4÷16),
=6÷0.025,
=240;
(2)(
-1 9
)×4×9,1 12
=
×4×9-1 9
×4×9,1 12
=4-3,
=1;
(3)
+11 12
-(5 8
-3 8
),1 12
=
+11 12
-5 8
+3 8
,1 12
=(
+11 12
)+(1 12
-5 8
),3 8
=1+
,1 4
=1
.1 4