4
11 ÷4=
1
11 , 14×
1
8 =
7
4 ,
5
9 ÷
2
3 =
5
6 ,
4
23 ÷
2
23 =2, 4-
1
5 =3
4
5 , (
1
2 +
1
4 )×8=6.
1÷
1
9 ÷
1
9 =81, 2.8÷
4
5 =3.5, 0÷
12
13 =0, 40×5%=2.
4
11 ÷4=
1
11 , 14×
1
8 =
7
4 ,
5
9 ÷
2
3 =
5
6 ,
4
23 ÷
2
23 =2, 4-
1
5 =3
4
5 , (
1
2 +
1
4 )×8=6.
1÷
1
9 ÷
1
9 =81, 2.8÷
4
5 =3.5, 0÷
12
13 =0, 40×5%=2.