问题
解答题
|
答案
(1)360÷15-2.5×1.4,
=24-3.5,
=20.5;
(2)560÷16÷5,
=560÷(16×5),
=560÷80,
=7;
(3)
+3 7
×4 7
-3 4
,3 4
=
+3 7
-3 7
,3 4
=
-6 7
,3 4
=
;3 28
(4)4.3×99,
=4.3×100-4.3,
=430-4.3,
=425.7;
(5)76÷7.6+2.4,
=10+2.4,
=12.4;
(6)
×[3 8
÷(8 9
-5 6
)]3 4
=
×[3 8
×12],8 9
=
×3 8
,32 3
=4.