问题
解答题
|
答案
(1)54.75-5.25-14.75,
=54.75-(14.75+5.25),
=54.75-20,
=34.75;
(2)16.4÷(4.3×2-0.4),
=16.4÷(8.6-0.4),
=16.4÷8.2,
=2;
(3)1.25×32,
=(1.25×8)×4,
=10×4,
=40;
(4)
×[1-(2 3
-1 2
)],1 4
=
×[1-2 3
],1 4
=
×2 3
,3 4
=
.1 2