问题 解答题
下面各题,怎样简便就怎样算.
375+450÷18×25

24×(
1
4
+
5
8
-
2
3
0.8×48+52×
4
5
4.3-(2.01+2.29÷10)
答案

(1)375+450÷18×25,

=375+25×25,

=375+625,

=1000;

(2)24×(

1
4
+
5
8
-
2
3
),

=24×

1
4
+24×
5
8
-24×
2
3

=6+15-16,

=21-16,

=5;

(3)0.8×48+52×

4
5

=0.8×(48+52),

=0.8×100,

=80;

(4)4.3-(2.01+2.29÷10),

=4.3-(2.01+0.229),

=4.3-2.239,

=2.061.

问答题 简答题
问答题 简答题