0.4×20%=0.08 9-0.9=8.1 7.2÷40%=18 3÷7=
3
7
2
5 +
1
3 =
11
15
1
5 -
1
6 =
1
30 24÷
3
4 =32
7
9 ×45=35 故答案依次为:0.08,8.1,18,
3
7 ,
11
15 ,
1
30 ,32,35.
0.4×20%=0.08 9-0.9=8.1 7.2÷40%=18 3÷7=
3
7
2
5 +
1
3 =
11
15
1
5 -
1
6 =
1
30 24÷
3
4 =32
7
9 ×45=35 故答案依次为:0.08,8.1,18,
3
7 ,
11
15 ,
1
30 ,32,35.