38-19=19, 0.36÷0.3=
6
5 , 2.5×4=10,
3÷7=
3
7 , 2.9×1000=2900, 1-
7
9 =
2
9 ,
1
6 -
1
7 =
1
42 ,
8
9 ÷
2
3 =
4
3 , 1÷
3
5 ×
5
3 =
25
9 ,
2
5 +
3
7 +
3
5 +
4
7 =2. 故答案为:19,
6
5 ,10,
3
7 ,2900,
2
9 ,
1
42 ,
4
3 ,
25
9 ,2.
38-19=19, 0.36÷0.3=
6
5 , 2.5×4=10,
3÷7=
3
7 , 2.9×1000=2900, 1-
7
9 =
2
9 ,
1
6 -
1
7 =
1
42 ,
8
9 ÷
2
3 =
4
3 , 1÷
3
5 ×
5
3 =
25
9 ,
2
5 +
3
7 +
3
5 +
4
7 =2. 故答案为:19,
6
5 ,10,
3
7 ,2900,
2
9 ,
1
42 ,
4
3 ,
25
9 ,2.