问题 解答题
下面各题怎么样算简便就怎样算.
①725-25×4
②54÷1.8+46
③2.25×4.8+77.5×0.48
④12×(
1
3
+
1
4
-
1
6
答案

①725-25×4,

=725-100,

=625;

②54÷1.8+46,

=30+46,

=76;

③2.25×4.8+77.5×0.48,

=2.25×4.8+7.75×4.8,

=(2.25+7.75)×4.8,

=10×4.8,

=48;

④24×(

1
2
+
1
3
-
1
6
),

=24×

1
2
+24×
1
3
-24×
1
6

=12+8-4,

=20-4,

=16.

填空题
单项选择题