(1)(
7
8 -
1
6 )×
3
5
=
17
24 ×
3
5 ,
=
17
40 ;
(2)18×
5
9 -
2
3 × 10
=10-6
2
3 ,
=3
1
3 ;
(3)10×7.2÷2
=72÷2,
=36;
(4)(20+2)÷20%
=22÷20%,
=110.
(1)(
7
8 -
1
6 )×
3
5
=
17
24 ×
3
5 ,
=
17
40 ;
(2)18×
5
9 -
2
3 × 10
=10-6
2
3 ,
=3
1
3 ;
(3)10×7.2÷2
=72÷2,
=36;
(4)(20+2)÷20%
=22÷20%,
=110.