make the smaler number

1. Make the smallest number.
H T U
6 4 0 1

2. Make the smallest number.
H T U
2 0 0 7

3. Make the smallest number.
H T U
1 7 4 3

4. Make the smallest number.
H T U
5 6 7 8

5. Make the smallest number.
H T U
1 9 4 0

6. Make the smallest number.
H T U
9 3 2 7

7. Make the smallest number.
H T U
1 2 0 0

8. Make the smallest number.
H T U
5 0 5 0

9. Make the smallest number.
H T U
7 6 4 5

10. Make the smallest number.
H T U
8 1 6 2