问题
解答题
|
答案
(1)7.08÷(1.25×0.8),
=7.08÷1,
=7.08;
(2)
-5 9
+5 6
,4 9
=
+5 9
-4 9
,5 6
=1-
,5 6
=
;1 6
(3)
×3 5
÷2 5
×3 5
,2 5
=
×3 5
×2 5
×5 3
,2 5
=(
×3 5
)×(5 3
×2 5
),2 5
=1×
,4 25
=
;4 25
(4)5.38-(2.1+2.38),
=5.38-2.38-2.1,
=3-2.1,
=0.9;
(5)(
-1 7
)×63,1 9
=
×63-1 7
×63,1 9
=9-7,
=2;
(6)0.5×(2.6-2.4),
=0.5×0.2,
=0.1;
(7)(0.18+0.9)÷0.9,
=1.08÷0.9,
=1.2;
(8)3-
-8 15
,7 15
=3-(
+8 15
),7 15
=3-1,
=2.