2
7 ×2=
4
7
14
19 ÷
7
19 =2
7
12 +
1
2 =
13
12
4×(
1
12 +
1
4 )=1
1
3 1÷37.5%=
8
3 5÷5÷
1
5 =5
32-32×
1
8 =28 (
1
4 -
1
5 )×20=1 故答案为:
4
7 ,2,
13
12 , 1
1
3 ,
8
3 ,5,28,1.
2
7 ×2=
4
7
14
19 ÷
7
19 =2
7
12 +
1
2 =
13
12
4×(
1
12 +
1
4 )=1
1
3 1÷37.5%=
8
3 5÷5÷
1
5 =5
32-32×
1
8 =28 (
1
4 -
1
5 )×20=1 故答案为:
4
7 ,2,
13
12 , 1
1
3 ,
8
3 ,5,28,1.