1-1÷7=
6
7 , 13×99=1287,
1
4 +
1
12 =
1
3 , 60×25%=15,
1
5 -
1
6 =
1
30 ,
(
3
5 +
1
3 )×15 =14, 20÷0.1%=200, 4.05-1.9=2.15, (
1
2 ) 2-(
1
3 ) 2=
5
36 , 24×
1
8 -
1
8 ÷
1
8 =2.
1-1÷7=
6
7 , 13×99=1287,
1
4 +
1
12 =
1
3 , 60×25%=15,
1
5 -
1
6 =
1
30 ,
(
3
5 +
1
3 )×15 =14, 20÷0.1%=200, 4.05-1.9=2.15, (
1
2 ) 2-(
1
3 ) 2=
5
36 , 24×
1
8 -
1
8 ÷
1
8 =2.