Subtrahierer an das Wechseln! 10 Einer = 1 Zehner; 10 Zehner = 1 Hunderter

$4 - 5$. We need to borrow. The 0 Zehner cannot lend, so we borrow from the Hunderter. The 4 Hunderter becomes 3, and the 0 Zehner becomes 10. Then, we borrow from the 10 Zehner, making it 9, and the 4 Einer becomes 14.

$9 - 4 = 5$.

$3 - 2 = 1$.
The result is $\boxed{159}$.

:

$7 - 8$. We need to borrow from the 3 Zehner, making it 2. The 7 Einer becomes 17.

$2 - 6$. We need to borrow from the 4 Hunderter, making it 3. The 2 Zehner becomes 12.

$3 - 1 = 2$.
The result is $\boxed{269}$.

:

$4 - 7$. We need to borrow from the 7 Zehner, making it 6. The 4 Einer becomes 14.

$6 - 9$. We need to borrow from the 8 Hunderter, making it 7. The 6 Zehner becomes 16.

$7 - 2 = 5$.
The result is $\boxed{577}$.

:

$6 - 8$. We need to borrow from the 4 Zehner, making it 3. The 6 Einer becomes 16.

$3 - 9$. We need to borrow from the 7 Hunderter, making it 6. The 3 Zehner becomes 13.

$6 - 1 = 5$.
The result is $\boxed{548}$.

:

$6 - 7$. We need to borrow. The 0 Zehner cannot lend, so we borrow from the 3 Hunderter, making it 2. The 0 Zehner becomes 10. Then, we borrow from the 10 Zehner, making it 9, and the 6 Einer becomes 16.

$9 - 8 = 1$.

$2 - 1 = 1$.
The result is $\boxed{119}$.

:

$0 - 6$. We need to borrow from the 3 Zehner, making it 2. The 0 Einer becomes 10.

$2 - 9$. We need to borrow from the 5 Hunderter, making it 4. The 2 Zehner becomes 12.

$4 - 2 = 2$.
The result is $\boxed{234}$.

:

$1 - 4$. We need to borrow from the 8 Zehner, making it 7. The 1 Einer becomes 11.

$7 - 8$. We need to borrow from the 2 Hunderter, making it 1. The 7 Zehner becomes 17.

$1 - 1 = 0$.
The result is $\boxed{97}$.

:

$0 - 8$. We need to borrow. The 0 Zehner cannot lend, so we borrow from the 4 Hunderter, making it 3. The 0 Zehner becomes 10. Then, we borrow from the 10 Zehner, making it 9, and the 0 Einer becomes 10.

$9 - 9 = 0$.

$3 - 2 = 1$.
The result is $\boxed{102}$.

:

$0 - 7$. We need to borrow from the 3 Zehner, making it 2. The 0 Einer becomes 10.

$2 - 4$. We need to borrow from the 5 Hunderter, making it 4. The 2 Zehner becomes 12.

$4 - 2 = 2$.
The result is $\boxed{283}$.

:

$2 - 0 = 2$.

$0 - 3$. We need to borrow from the 9 Hunderter, making it 8. The 0 Zehner becomes 10.

$8 - 4 = 4$.
The result is $\boxed{472}$.