问题
解答题
计算下面各题,能简算的要简算.
4×3.6×2.5 (3.8-3.6÷2)×
|
答案
(1)
×3 8
+5 11
÷5 8
,11 5
=
×3 8
+5 11
×5 8
,5 11
=(
+3 8
)×5 8
,5 11
=1×
,5 11
=
;5 11
(2)4×3.6×2.5,
=4×2.5×3.6,
=10×3.6,
=36;
(3)(3.8-3.6÷2)×
,1 2
=(3.8-1.8)×
,1 2
=2×
,1 2
=1;
(4)
÷[9 10
×(1 2
-6 5
)],3 10
=
÷[9 10
×1 2
],9 10
=
÷9 10
,9 20
=2.