Build the greatest $5$-digit numbers using the different digits.

What numbers can you make using $3, 5$ and $7$ ? You can make $357$and $537.$What others ?

Write the number formed by the below digits.

$8$ tens and $0$ ones$=$

Form the greatest $4-$digit number by using the digits $1, 9, 7, 5$.

The greatest $4-$digit number by using the digits $6, 2, 5, 3$.

Form the smallest $4$-digit number by using all the digits $6, 2, 5, 3$.

Make the greatest $4-$digit number by using the following digits. (Write the final answer without commas in the box)

$7, 0, 5, 8$