问题
解答题
怎样简便就怎样算: 4.5+5.5×3.6×0.1; 5-
10.8×(
(3.25-0.8×
|
答案
(1)4.5+5.5×3.6×0.1,
=4.5+19.8×0.1,
=4.5+1.98,
=6.48;
(2)5-
+1 3
-1 2
,1 6
=4
+2 3
-1 2
,1 6
=5
-1 6
,1 6
=5;
(3)
×0.16×1 4
×0.124×3 8
÷4×1 2
,1 2
=0.04×
×0.124×3 8
÷4×1 2
,1 2
=0.015×0.124×
÷4×1 2
,1 2
=0.00186×
÷4×1 2
,1 2
=0.00093÷4×
,1 2
=0.0002325×
,1 2
=0.00011625;
(4)10.8×(
+2 3
+5 6
),4 9
=10.8×
+10.8×2 3
+10.8×5 6
,4 9
=7.2+9+4.8,
=21;
(5)(3.25-0.8×
)÷0.1,5 8
=(3.25-0.5)÷0.1,
=2.75÷0.1,
=27.5.