(1)60×
3
4 +4
=45+4
=49;
答:乙数是49.
(2)4÷(
1
3 -
1
4 )
=4÷
1
12
=4×12
=48;
答:这个数是48.
(3)
1
5 ×
5
2 -
1
12 ÷
2
3
=
1
2 -
1
12 ×
3
2
=
1
2 -
1
8
=
3
8 ;
答:差是
3
8 .
(1)60×
3
4 +4
=45+4
=49;
答:乙数是49.
(2)4÷(
1
3 -
1
4 )
=4÷
1
12
=4×12
=48;
答:这个数是48.
(3)
1
5 ×
5
2 -
1
12 ÷
2
3
=
1
2 -
1
12 ×
3
2
=
1
2 -
1
8
=
3
8 ;
答:差是
3
8 .