问题
解答题
|
答案
(1)
×4 9
÷1 5 4 5
=
×4 9
×1 5
,5 4
=
;1 9
(2)4-
-5 11 6 11
=4-(
+5 11
),6 11
=4-1,
=3;
(3)
×58+42÷81 8
=
×58+42×1 8
,1 8
=(58+42)×
,1 8
=100×
,1 8
=12.5;
(4)36×(
+2 3
-1 6
)3 4
=36×
+36×2 3
-36×1 6
,3 4
=24+6-27,
=3;
(5)(15-14×
)×4 7 8 21
=(15-8)×
,8 21
=7×
,8 21
=
;8 3
(6)
÷4 5
-5 8
÷1 2 5 8
=
×4 5
-8 5
×1 2
,8 5
=(
-4 5
)×1 2
,8 5
=
×3 10
,8 5
=
.12 25