问题
解答题
|
答案
(1)208-900÷45,
=208-20,
=188;
(2)25.6-8.44-1.56,
=25.6-(8.44+1.56),
=25.6-10,
=15.6;
(3)0.8×40×25×1.25,
=(0.8×1.25)×(40×25),
=1×1000,
=1000;
(4)[1-(
-1 2
)]×1 4
,2 3
=[1-
]×1 4
,2 3
=
×3 4
,2 3
=
;1 2
(5)(
-11 15
÷3)÷9 5
,7 15
=(
-11 15
)÷9 15
,7 15
=
÷2 15
,7 15
=
.2 7