Grid of 4-digit subtraction problems designed to practice borrowing across zeros.

The task involves solving a series of subtraction problems. Each problem consists of two numbers, and the goal is to subtract the second number from the first. Below, I will solve each subtraction problem step by step.

Problem 1: \( 9080 - 4789 \)

\[
\begin{array}{r}
9080 \\
- 4789 \\
\hline
4291 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Problem 2: \( 9070 - 4469 \)

\[
\begin{array}{r}
9070 \\
- 4469 \\
\hline
4601 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Problem 3: \( 9060 - 3569 \)

\[
\begin{array}{r}
9060 \\
- 3569 \\
\hline
5491 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Problem 4: \( 9080 - 2978 \)

\[
\begin{array}{r}
9080 \\
- 2978 \\
\hline
6102 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Problem 5: \( 9050 - 1388 \)

\[
\begin{array}{r}
9050 \\
- 1388 \\
\hline
7662 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Problem 6: \( 9040 - 4779 \)

\[
\begin{array}{r}
9040 \\
- 4779 \\
\hline
4261 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Problem 7: \( 9060 - 5898 \)

\[
\begin{array}{r}
9060 \\
- 5898 \\
\hline
3162 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Problem 8: \( 9080 - 4556 \)

\[
\begin{array}{r}
9080 \\
- 4556 \\
\hline
4524 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Problem 9: \( 9040 - 3588 \)

\[
\begin{array}{r}
9040 \\
- 3588 \\
\hline
5452 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Problem 10: \( 9060 - 2978 \)

\[
\begin{array}{r}
9060 \\
- 2978 \\
\hline
6082 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Problem 11: \( 9070 - 1776 \)

\[
\begin{array}{r}
9070 \\
- 1776 \\
\hline
7294 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Problem 12: \( 9060 - 2964 \)

\[
\begin{array}{r}
9060 \\
- 2964 \\
\hline
6096 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Problem 13: \( 9090 - 3743 \)

\[
\begin{array}{r}
9090 \\
- 3743 \\
\hline
5347 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Problem 14: \( 9060 - 4279 \)

\[
\begin{array}{r}
9060 \\
- 4279 \\
\hline
4781 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Problem 15: \( 9090 - 5968 \)

\[
\begin{array}{r}
9090 \\
- 5968 \\
\hline
3122 \\
\end{array}
\]
- Subtract digit by digit, borrowing as necessary.

Final Answers:

\[
\boxed{
\begin{array}{ccc}
4291 & 4601 & 5491 \\
6102 & 7662 & 4261 \\
3162 & 4524 & 5452 \\
6082 & 7294 & 6096 \\
5347 & 4781 & 3122 \\
\end{array}
}
\]