(1)2.4÷60%×
3
5 ,
=4×
=2.4,
答:乙数的
5 是2.4;
(2)
1
5 × 45-4 ÷
4
=9-5,
=4,
答:差是;
(3)1÷2
5
9 =
9
23 ,
答:另一个内项是
23 .