问题
解答题
|
答案
(1)12×(87+368÷16)
=12×(87+23)
=12×110
=1320;
(2)3-
×3 2
-10 21 2 7
=3-
-5 7 2 7
=3-(
+5 7
)2 7
=3-1
=2;
(3)6×18+4.4×18
=(6+4.4)×18
=10.4×18
=187.2;
(4)
×[8 9
-(3 4
-15 16 3 4
=
×[8 9
-3 4
]3 16
=
×8 9 9 16
=
.1 2