1.2÷
6
7 =1.4, 1÷0.01-1=99,
1
4 -
1
5 =
1
20 , 5÷
1
5 ×5=125,
2÷2%=100, 0.5-20=-19.5, 5.7+11.8+4.3=21.8, 2
5
9 -
5
6 +
4
9 =2
1
6 ,
(
1
6 +
1
8 )×24=7, 4.9×81=396.9. 故答案为:1.4,99,
1
20 ,125,100,-19.5,21.8,2
1
6 ,7,396.9.
1.2÷
6
7 =1.4, 1÷0.01-1=99,
1
4 -
1
5 =
1
20 , 5÷
1
5 ×5=125,
2÷2%=100, 0.5-20=-19.5, 5.7+11.8+4.3=21.8, 2
5
9 -
5
6 +
4
9 =2
1
6 ,
(
1
6 +
1
8 )×24=7, 4.9×81=396.9. 故答案为:1.4,99,
1
20 ,125,100,-19.5,21.8,2
1
6 ,7,396.9.