Subtraction with Regrouping math worksheet for St. Patrick's Day practice.

Problem Description:

The image shows a worksheet titled "Subtraction with Regrouping." It contains multiple subtraction problems that require regrouping (borrowing) to solve. The task is to solve each subtraction problem step by step.

Solution:

#### First Row:
1. 72 - 25:
- Subtract the ones place: \( 2 - 5 \). Since 2 is less than 5, we need to regroup.
- Borrow 1 from the tens place (7 becomes 6), and add 10 to the ones place (2 becomes 12).
- Now, \( 12 - 5 = 7 \).
- Subtract the tens place: \( 6 - 2 = 4 \).
- Answer: \( 72 - 25 = 47 \).

2. 56 - 47:
- Subtract the ones place: \( 6 - 7 \). Since 6 is less than 7, we need to regroup.
- Borrow 1 from the tens place (5 becomes 4), and add 10 to the ones place (6 becomes 16).
- Now, \( 16 - 7 = 9 \).
- Subtract the tens place: \( 4 - 4 = 0 \).
- Answer: \( 56 - 47 = 9 \).

3. 72 - 64:
- Subtract the ones place: \( 2 - 4 \). Since 2 is less than 4, we need to regroup.
- Borrow 1 from the tens place (7 becomes 6), and add 10 to the ones place (2 becomes 12).
- Now, \( 12 - 4 = 8 \).
- Subtract the tens place: \( 6 - 6 = 0 \).
- Answer: \( 72 - 64 = 8 \).

4. 56 - 19:
- Subtract the ones place: \( 6 - 9 \). Since 6 is less than 9, we need to regroup.
- Borrow 1 from the tens place (5 becomes 4), and add 10 to the ones place (6 becomes 16).
- Now, \( 16 - 9 = 7 \).
- Subtract the tens place: \( 4 - 1 = 3 \).
- Answer: \( 56 - 19 = 37 \).

#### Second Row:
1. 84 - 36:
- Subtract the ones place: \( 4 - 6 \). Since 4 is less than 6, we need to regroup.
- Borrow 1 from the tens place (8 becomes 7), and add 10 to the ones place (4 becomes 14).
- Now, \( 14 - 6 = 8 \).
- Subtract the tens place: \( 7 - 3 = 4 \).
- Answer: \( 84 - 36 = 48 \).

2. 46 - 28:
- Subtract the ones place: \( 6 - 8 \). Since 6 is less than 8, we need to regroup.
- Borrow 1 from the tens place (4 becomes 3), and add 10 to the ones place (6 becomes 16).
- Now, \( 16 - 8 = 8 \).
- Subtract the tens place: \( 3 - 2 = 1 \).
- Answer: \( 46 - 28 = 18 \).

3. 77 - 68:
- Subtract the ones place: \( 7 - 8 \). Since 7 is less than 8, we need to regroup.
- Borrow 1 from the tens place (7 becomes 6), and add 10 to the ones place (7 becomes 17).
- Now, \( 17 - 8 = 9 \).
- Subtract the tens place: \( 6 - 6 = 0 \).
- Answer: \( 77 - 68 = 9 \).

4. 61 - 32:
- Subtract the ones place: \( 1 - 2 \). Since 1 is less than 2, we need to regroup.
- Borrow 1 from the tens place (6 becomes 5), and add 10 to the ones place (1 becomes 11).
- Now, \( 11 - 2 = 9 \).
- Subtract the tens place: \( 5 - 3 = 2 \).
- Answer: \( 61 - 32 = 29 \).

#### Third Row:
1. 46 - 39:
- Subtract the ones place: \( 6 - 9 \). Since 6 is less than 9, we need to regroup.
- Borrow 1 from the tens place (4 becomes 3), and add 10 to the ones place (6 becomes 16).
- Now, \( 16 - 9 = 7 \).
- Subtract the tens place: \( 3 - 3 = 0 \).
- Answer: \( 46 - 39 = 7 \).

2. 32 - 23:
- Subtract the ones place: \( 2 - 3 \). Since 2 is less than 3, we need to regroup.
- Borrow 1 from the tens place (3 becomes 2), and add 10 to the ones place (2 becomes 12).
- Now, \( 12 - 3 = 9 \).
- Subtract the tens place: \( 2 - 2 = 0 \).
- Answer: \( 32 - 23 = 9 \).

3. 64 - 25:
- Subtract the ones place: \( 4 - 5 \). Since 4 is less than 5, we need to regroup.
- Borrow 1 from the tens place (6 becomes 5), and add 10 to the ones place (4 becomes 14).
- Now, \( 14 - 5 = 9 \).
- Subtract the tens place: \( 5 - 2 = 3 \).
- Answer: \( 64 - 25 = 39 \).

4. 54 - 28:
- Subtract the ones place: \( 4 - 8 \). Since 4 is less than 8, we need to regroup.
- Borrow 1 from the tens place (5 becomes 4), and add 10 to the ones place (4 becomes 14).
- Now, \( 14 - 8 = 6 \).
- Subtract the tens place: \( 4 - 2 = 2 \).
- Answer: \( 54 - 28 = 26 \).

#### Fourth Row:
1. 64 - 28:
- Subtract the ones place: \( 4 - 8 \). Since 4 is less than 8, we need to regroup.
- Borrow 1 from the tens place (6 becomes 5), and add 10 to the ones place (4 becomes 14).
- Now, \( 14 - 8 = 6 \).
- Subtract the tens place: \( 5 - 2 = 3 \).
- Answer: \( 64 - 28 = 36 \).

2. 55 - 47:
- Subtract the ones place: \( 5 - 7 \). Since 5 is less than 7, we need to regroup.
- Borrow 1 from the tens place (5 becomes 4), and add 10 to the ones place (5 becomes 15).
- Now, \( 15 - 7 = 8 \).
- Subtract the tens place: \( 4 - 4 = 0 \).
- Answer: \( 55 - 47 = 8 \).

3. 48 - 39:
- Subtract the ones place: \( 8 - 9 \). Since 8 is less than 9, we need to regroup.
- Borrow 1 from the tens place (4 becomes 3), and add 10 to the ones place (8 becomes 18).
- Now, \( 18 - 9 = 9 \).
- Subtract the tens place: \( 3 - 3 = 0 \).
- Answer: \( 48 - 39 = 9 \).

Final Answers:

\[
\boxed{
\begin{array}{cccc}
47 & 9 & 8 & 37 \\
48 & 18 & 9 & 29 \\
7 & 9 & 39 & 26 \\
36 & 8 & 9 &
\end{array}
}
\]