问题
解答题
怎样简便就怎样算. 375+450×25 9.07-22.78÷3.4 1.25×14×0.8 (
5.65×
|
答案
(1)375+450×25,
=375+11250,
=11625;
(2)9.07-22.78÷3.4,
=9.07-6.7,
=2.37;
(3)1.25×14×0.8,
=1.25×0.8×14,
=1×14,
=14;
(4)(
×3.2+0.8)×1 4
,5 9
=(0.8+0.8)×
,5 9
=
×8 5
,5 9
=
;8 9
(5)5.65×
+5 3
÷7 20
,3 5
=5.65×
+5 3
×7 20
,5 3
=(5
+13 20
)×7 20
,5 3
=6×
,5 3
=10.