问题
解答题
2010×
5.75-3.09-1.75
|
答案
(1)2010×
+2010÷15×13,2 15
=2010×
+2010×2 15
,13 15
=2010×(
+2 15
),13 15
=2010;
(2)5.75-3.09-1.75,
=5.75-1.75-3.09,
=4-3.09,
=0.91;
(3)
×(2 3
-1 4
)÷1 6
,10 9
=
×(2 3
-1 4
)×1 6
,9 10
=
×3 5
-1 4
×3 5
,1 6
=
-3 20
,1 10
=
-3 20
,2 20
=
;1 20
(4)
×[1 6
÷(9 16
-7 16
)],1 4
=
×[1 6
÷(9 16
-7 16
)],1 4
=
×[1 6
÷9 16
],3 16
=
×[1 6
×9 16
],16 3
=
×3,1 6
=
.1 2