问题
解答题
计算下列各题,能简算的要简算. 5÷(
|
答案
(1)5÷(
+1 2
)×1 6 2 15
=5×
÷(2 15
+1 2
),1 6
=
÷(2 3
+1 2
),1 6
=
×2 3
,6 4
=1;
(2)(
-1 2
+1 3
)×481 4
=
×48-1 2
×48+1 3
×48,1 4
=24-16+12,
=20;
(3)
÷9+6 25
×6 25 8 9
=
×6 25
+1 9
×6 25
,8 9
=
×(6 25
+1 9
),8 9
=
×1,6 25
=
;6 25
(4)(
-1 2
)×3 7
+7 25 2 5
=
×1 14
+7 25
,2 5
=
+1 50
,2 5
=
.21 50