脱式计算(能简算的要简算).0.125×0.25×8×4 &...

2024-11-08 20:30:44
推荐回答(1个)
回答(1):

(1)0.125×0.25×8×4
=(0.25×4)×(0.125×8)
=1×1
=1;

(2)54×(

5
6
-
2
9
 )
=54×
5
6
-54×
2
9

=45-12
=33;

(3)
3
5
×13+
3
5
÷
1
13

=
3
5
×13+
3
5
×13

=
3
5
×(13+13)
=
3
5
×26
=
78
5


(4)8.05-0.75-
1
4

=8.05-0.75-0.25
=8.05-(0.75+0.25)
=8.05-1
=7.05.