问题
解答题
动手算我能行(能简算的要简算)
|
答案
(1)12×(
+3 4
-1 3
),1 6
=12×
+12×3 4
-12×1 3
,1 6
=9+4-2,
=13-2,
=11;
(2)[1-(
-1 2
)]×1 4
,2 3
=[1-
]×1 4
,2 3
=
×3 4
,2 3
=
;1 2
(3)99.6×18+40%×18,
=(99.6+40%)×18,
=100×18,
=1800;
(4)
÷[3 5
×(7 8
+1 10
)],1 6
=
÷[3 5
×7 8
],4 15
=
÷3 5
,7 30
=
.18 7