问题
解答题
计算下面各题.
|
答案
(1)
×4 9
÷15 16
,5 6
=
×4 9
×15 16
,6 5
=
;1 2
(2)(
+4 5
)÷1 4
+7 3
,7 10
=(
+16 20
)÷5 20
+7 3
,7 10
=
×21 20
+3 7
,7 10
=
+9 20
,14 20
=
,23 20
=1
;3 20
(3)4÷
-0.6,8 3
=4×
-0.6,3 8
=1.5-0.6,
=0.9;
(4)0.75×18÷0.15,
=0.75÷0.15×18,
=5×18,
=90.