3 Digit Subtraction Worksheets - Free Printable

Problem: Solve the 3-digit subtraction problems with regrouping from tens to ones only.

#### Instructions:
- Subtract the ones first.
- Then subtract the tens.
- Finally, subtract the hundreds.
- Regroup (borrow) as needed when necessary.

#### Solution:

Let's solve each problem step by step.

---

Problem 1:

$$
243 - 126
$$

1. Subtract the ones:
$$
3 - 6 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (4 becomes 3).
- Add 10 to the ones place (3 becomes 13).
$$
13 - 6 = 7
$$

2. Subtract the tens:
$$
3 - 2 = 1
$$

3. Subtract the hundreds:
$$
2 - 1 = 1
$$

Answer:
$$
\boxed{117}
$$

---

Problem 2:

$$
131 - 125
$$

1. Subtract the ones:
$$
1 - 5 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (3 becomes 2).
- Add 10 to the ones place (1 becomes 11).
$$
11 - 5 = 6
$$

2. Subtract the tens:
$$
2 - 2 = 0
$$

3. Subtract the hundreds:
$$
1 - 1 = 0
$$

Answer:
$$
\boxed{6}
$$

---

Problem 3:

$$
257 - 134
$$

1. Subtract the ones:
$$
7 - 4 = 3
$$

2. Subtract the tens:
$$
5 - 3 = 2
$$

3. Subtract the hundreds:
$$
2 - 1 = 1
$$

Answer:
$$
\boxed{123}
$$

---

Problem 4:

$$
483 - 137
$$

1. Subtract the ones:
$$
3 - 7 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (8 becomes 7).
- Add 10 to the ones place (3 becomes 13).
$$
13 - 7 = 6
$$

2. Subtract the tens:
$$
7 - 3 = 4
$$

3. Subtract the hundreds:
$$
4 - 1 = 3
$$

Answer:
$$
\boxed{346}
$$

---

Problem 5:

$$
251 - 36
$$

1. Subtract the ones:
$$
1 - 6 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (5 becomes 4).
- Add 10 to the ones place (1 becomes 11).
$$
11 - 6 = 5
$$

2. Subtract the tens:
$$
4 - 3 = 1
$$

3. Subtract the hundreds:
$$
2 - 0 = 2
$$

Answer:
$$
\boxed{215}
$$

---

Problem 6:

$$
333 - 115
$$

1. Subtract the ones:
$$
3 - 5 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (3 becomes 2).
- Add 10 to the ones place (3 becomes 13).
$$
13 - 5 = 8
$$

2. Subtract the tens:
$$
2 - 1 = 1
$$

3. Subtract the hundreds:
$$
3 - 1 = 2
$$

Answer:
$$
\boxed{218}
$$

---

Problem 7:

$$
445 - 226
$$

1. Subtract the ones:
$$
5 - 6 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (4 becomes 3).
- Add 10 to the ones place (5 becomes 15).
$$
15 - 6 = 9
$$

2. Subtract the tens:
$$
3 - 2 = 1
$$

3. Subtract the hundreds:
$$
4 - 2 = 2
$$

Answer:
$$
\boxed{219}
$$

---

Problem 8:

$$
572 - 254
$$

1. Subtract the ones:
$$
2 - 4 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (7 becomes 6).
- Add 10 to the ones place (2 becomes 12).
$$
12 - 4 = 8
$$

2. Subtract the tens:
$$
6 - 5 = 1
$$

3. Subtract the hundreds:
$$
5 - 2 = 3
$$

Answer:
$$
\boxed{318}
$$

---

Problem 9:

$$
358 - 215
$$

1. Subtract the ones:
$$
8 - 5 = 3
$$

2. Subtract the tens:
$$
5 - 1 = 4
$$

3. Subtract the hundreds:
$$
3 - 2 = 1
$$

Answer:
$$
\boxed{143}
$$

---

Problem 10:

$$
260 - 128
$$

1. Subtract the ones:
$$
0 - 8 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (6 becomes 5).
- Add 10 to the ones place (0 becomes 10).
$$
10 - 8 = 2
$$

2. Subtract the tens:
$$
5 - 2 = 3
$$

3. Subtract the hundreds:
$$
2 - 1 = 1
$$

Answer:
$$
\boxed{132}
$$

---

Problem 11:

$$
165 - 27
$$

1. Subtract the ones:
$$
5 - 7 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (6 becomes 5).
- Add 10 to the ones place (5 becomes 15).
$$
15 - 7 = 8
$$

2. Subtract the tens:
$$
5 - 2 = 3
$$

3. Subtract the hundreds:
$$
1 - 0 = 1
$$

Answer:
$$
\boxed{138}
$$

---

Problem 12:

$$
352 - 236
$$

1. Subtract the ones:
$$
2 - 6 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (5 becomes 4).
- Add 10 to the ones place (2 becomes 12).
$$
12 - 6 = 6
$$

2. Subtract the tens:
$$
4 - 3 = 1
$$

3. Subtract the hundreds:
$$
3 - 2 = 1
$$

Answer:
$$
\boxed{116}
$$

---

Problem 13:

$$
435 - 107
$$

1. Subtract the ones:
$$
5 - 7 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (3 becomes 2).
- Add 10 to the ones place (5 becomes 15).
$$
15 - 7 = 8
$$

2. Subtract the tens:
$$
2 - 0 = 2
$$

3. Subtract the hundreds:
$$
4 - 1 = 3
$$

Answer:
$$
\boxed{328}
$$

---

Problem 14:

$$
572 - 346
$$

1. Subtract the ones:
$$
2 - 6 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (7 becomes 6).
- Add 10 to the ones place (2 becomes 12).
$$
12 - 6 = 6
$$

2. Subtract the tens:
$$
6 - 4 = 2
$$

3. Subtract the hundreds:
$$
5 - 3 = 2
$$

Answer:
$$
\boxed{226}
$$

---

Problem 15:

$$
651 - 216
$$

1. Subtract the ones:
$$
1 - 6 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (5 becomes 4).
- Add 10 to the ones place (1 becomes 11).
$$
11 - 6 = 5
$$

2. Subtract the tens:
$$
4 - 1 = 3
$$

3. Subtract the hundreds:
$$
6 - 2 = 4
$$

Answer:
$$
\boxed{435}
$$

---

Problem 16:

$$
268 - 35
$$

1. Subtract the ones:
$$
8 - 5 = 3
$$

2. Subtract the tens:
$$
6 - 3 = 3
$$

3. Subtract the hundreds:
$$
2 - 0 = 2
$$

Answer:
$$
\boxed{233}
$$

---

Problem 17:

$$
670 - 255
$$

1. Subtract the ones:
$$
0 - 5 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (7 becomes 6).
- Add 10 to the ones place (0 becomes 10).
$$
10 - 5 = 5
$$

2. Subtract the tens:
$$
6 - 5 = 1
$$

3. Subtract the hundreds:
$$
6 - 2 = 4
$$

Answer:
$$
\boxed{415}
$$

---

Problem 18:

$$
587 - 47
$$

1. Subtract the ones:
$$
7 - 7 = 0
$$

2. Subtract the tens:
$$
8 - 4 = 4
$$

3. Subtract the hundreds:
$$
5 - 0 = 5
$$

Answer:
$$
\boxed{540}
$$

---

Problem 19:

$$
457 - 329
$$

1. Subtract the ones:
$$
7 - 9 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (5 becomes 4).
- Add 10 to the ones place (7 becomes 17).
$$
17 - 9 = 8
$$

2. Subtract the tens:
$$
4 - 2 = 2
$$

3. Subtract the hundreds:
$$
4 - 3 = 1
$$

Answer:
$$
\boxed{128}
$$

---

Problem 20:

$$
758 - 139
$$

1. Subtract the ones:
$$
8 - 9 \quad \text{(Not possible, so regroup)}
$$
- Borrow 1 from the tens place (5 becomes 4).
- Add 10 to the ones place (8 becomes 18).
$$
18 - 9 = 9
$$

2. Subtract the tens:
$$
4 - 3 = 1
$$

3. Subtract the hundreds:
$$
7 - 1 = 6
$$

Answer:
$$
\boxed{619}
$$

---

Final Answers:

$$
\boxed{
\begin{array}{ll}
1) & 117 \\
2) & 6 \\
3) & 123 \\
4) & 346 \\
5) & 215 \\
6) & 218 \\
7) & 219 \\
8) & 318 \\
9) & 143 \\
10) & 132 \\
11) & 138 \\
12) & 116 \\
13) & 328 \\
14) & 226 \\
15) & 435 \\
16) & 233 \\
17) & 415 \\
18) & 540 \\
19) & 128 \\
20) & 619 \\
\end{array}
}
$$