0.25×
2
3 ×4=
2
3 , 624×50%=312, 0.5÷
1
8 =4, 5-1.42=3.58,
1
3 +
1
4 =
7
12 , 0.125+
7
8 =1, 1-
1
4 -
3
4 =0,
1
2 ÷
2
5 =
5
4 ,
(
3
4 -
3
8 )÷
1
8 =3, 8-8÷4-
1
4 =5
3
4 .
0.25×
2
3 ×4=
2
3 , 624×50%=312, 0.5÷
1
8 =4, 5-1.42=3.58,
1
3 +
1
4 =
7
12 , 0.125+
7
8 =1, 1-
1
4 -
3
4 =0,
1
2 ÷
2
5 =
5
4 ,
(
3
4 -
3
8 )÷
1
8 =3, 8-8÷4-
1
4 =5
3
4 .