问题
解答题
|
答案
(1)30×(
+2 5
),1 6
=30×
+30×2 5
,1 6
=12+5,
=17;
(2)98×
+98×4 7
,3 7
=98×(
+4 7
),3 7
=98×1,
=98;
(3)(
-1 3
)÷1 4
+1 2
,5 6
=
÷1 12
+1 2
,5 6
=
+1 6
,5 6
=1;
(4)(
+1 2
+1 3
)×24,1 4
=
×24+1 2
×24+1 3
×24,1 4
=12+8+6,
=26;
(5)
×4 9
+1 6
÷6,5 9
=
×4 9
+1 6
×5 9
,1 6
=
×(1 6
+5 9
),4 9
=
×1,1 6
=
;1 6
(6)
-(13 12
+1 12
),1 5
=
-13 12
-1 12
,1 5
=1-
,1 5
=
.4 5