问题
解答题
怎样简便就怎样算.
|
答案
(1)2.7×
+1.3×3 4
,3 4
=(2.7+1.3)×
,3 4
=4×
,3 4
=3;
(2)24×[(
-5 6
)÷3 4
],1 6
=24×[
÷1 12
],1 6
=24×
,1 2
=12;
(3)143-6.46-3.54,
=143-(6.46+3.54),
=143-10,
=133.
怎样简便就怎样算.
|
(1)2.7×
+1.3×3 4
,3 4
=(2.7+1.3)×
,3 4
=4×
,3 4
=3;
(2)24×[(
-5 6
)÷3 4
],1 6
=24×[
÷1 12
],1 6
=24×
,1 2
=12;
(3)143-6.46-3.54,
=143-(6.46+3.54),
=143-10,
=133.