Student's completed division worksheet with handwritten answers and teacher corrections.

Let's solve each of the division problems on the worksheet step by step. The task is to divide a 3-digit number by a 1-digit number and write only the quotient (answer). We'll go through each problem carefully.

---

(1) $ 616 \div 2 $

- $ 2 \times 300 = 600 $
- $ 616 - 600 = 16 $
- $ 2 \times 8 = 16 $
- So, $ 300 + 8 = 308 $

✔ Answer: 308
*(Correctly written)*

---

(2) $ 618 \div 3 $

- $ 3 \times 200 = 600 $
- $ 618 - 600 = 18 $
- $ 3 \times 6 = 18 $
- So, $ 200 + 6 = 206 $

✔ Answer: 206
*(Correctly written)*

---

(3) $ 636 \div 4 $

- $ 4 \times 150 = 600 $
- $ 636 - 600 = 36 $
- $ 4 \times 9 = 36 $
- So, $ 150 + 9 = 159 $

✔ Answer: 159
*(Correctly written)*

---

(4) $ 640 \div 5 $

- $ 5 \times 120 = 600 $
- $ 640 - 600 = 40 $
- $ 5 \times 8 = 40 $
- So, $ 120 + 8 = 128 $

✔ Answer: 128
*(Correctly written)*

---

(5) $ 642 \div 6 $

- $ 6 \times 100 = 600 $
- $ 642 - 600 = 42 $
- $ 6 \times 7 = 42 $
- So, $ 100 + 7 = 107 $

✔ Answer: 107
*(Correctly written)*

---

(6) $ 644 \div 7 $

Let’s do this carefully:

- $ 7 \times 90 = 630 $
- $ 644 - 630 = 14 $
- $ 7 \times 2 = 14 $
- So, $ 90 + 2 = 92 $

✘ But the student wrote 92, and there's a red mark with "1" circled — possibly indicating an error?

Wait — let's double-check:
- $ 7 \times 92 = 7 \times 90 + 7 \times 2 = 630 + 14 = 644 $ ✔

So, 92 is correct.

But the red circle with “1” might be a grading mark — perhaps it was marked wrong for some reason? Let's check if the student wrote it correctly.

Looking at the image: The student wrote 92, but there's a red line crossing through it and a red "1" in a circle. That may mean one mistake, or maybe it was misread.

Wait — actually, the answer is correct: $ 7 \times 92 = 644 $. So unless there's a formatting issue, this should be right.

But let's look at the next ones.

---

(7) $ 656 \div 8 $

- $ 8 \times 80 = 640 $
- $ 656 - 640 = 16 $
- $ 8 \times 2 = 16 $
- So, $ 80 + 2 = 82 $

✔ Answer: 82

Student wrote 82 — correct.

---

(8) $ 657 \div 9 $

- $ 9 \times 70 = 630 $
- $ 657 - 630 = 27 $
- $ 9 \times 3 = 27 $
- So, $ 70 + 3 = 73 $

✔ Answer: 73

Student wrote 73 — correct.

---

(9) $ 658 \div 2 $

- $ 2 \times 300 = 600 $
- $ 658 - 600 = 58 $
- $ 2 \times 29 = 58 $
- So, $ 300 + 29 = 329 $

✔ Answer: 329

Student wrote 329 — correct.

---

(10) $ 651 \div 3 $

- $ 3 \times 200 = 600 $
- $ 651 - 600 = 51 $
- $ 3 \times 17 = 51 $
- So, $ 200 + 17 = 217 $

✔ Answer: 217

Student wrote 217 — correct.

---

## ✔ Final Answers:

| Problem | Division | Answer |
|--------|----------------|--------|
| (1) | 616 ÷ 2 | 308 |
| (2) | 618 ÷ 3 | 206 |
| (3) | 636 ÷ 4 | 159 |
| (4) | 640 ÷ 5 | 128 |
| (5) | 642 ÷ 6 | 107 |
| (6) | 644 ÷ 7 | 92 |
| (7) | 656 ÷ 8 | 82 |
| (8) | 657 ÷ 9 | 73 |
| (9) | 658 ÷ 2 | 329 |
| (10) | 651 ÷ 3 | 217 |

All answers are correct!

---

## ❓ Why the red mark?

The red line goes from problem (5) to (6), with a red "1" circled near (6). This likely means the teacher marked one error, but all calculations are correct.

Possibility:
- Maybe the student didn't write the remainder?
- Or perhaps there was a formatting issue — like not writing the full answer clearly?
- Or maybe problem (6) was meant to have a remainder?

Let’s check:
$ 644 \div 7 = 92 $ exactly — no remainder.

So no remainder.

Alternatively, could the student have made a small mistake in writing?

Looking closely: The student wrote 92, which is correct.

But perhaps the teacher expected a different format, or maybe it was a misread.

Another idea: Did the student write "92" but the teacher thought it was "90" or something else?

No — it looks like 92.

---

## ✔ Conclusion:

All answers are mathematically correct.

The red marking might be a mistake by the teacher, or due to a formatting issue (e.g., missing remainder, though not required).

Since the instructions say: "Write only the answers", and the answers are correct, this worksheet is fully correct.

---

✔ Final Verdict:

All answers are correct.
The red mark may be an error or based on non-mathematical criteria (like neatness).
Student did excellent work! 🎉