Students can use the provided number lines to visualize rounding numbers like 76 and 28 to the nearest ten.

Let's solve the rounding problem step by step using the number lines provided. The goal is to round each number to the nearest ten.

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🔍 How to Round to the Nearest Ten:

- Look at the ones digit of the number.
- If it’s less than 5, round down (to the lower ten).
- If it’s 5 or more, round up (to the higher ten).

We’ll use the number line to visualize this.

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✔ Problem 1: 43 → ?

- Number line: 40 to 50
- 43 is between 40 and 50.
- Since 43 is closer to 40 (only 3 away), we round down.
- ✔ Answer: 40 (already given as an example)

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🟨 Problem 2: 76 → ?

- Number line: 70 to 80
- 76 is between 70 and 80.
- 76 is closer to 80 because 76 – 70 = 6, and 80 – 76 = 4 → closer to 80.
- Or: ones digit is 6 → ≥5 → round up.
- ✔ Answer: 80

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🟨 Problem 3: 28 → ?

- Number line: 20 to 30
- 28 is between 20 and 30.
- 28 is closer to 30 (since 28–20=8, 30–28=2).
- Ones digit is 8 → ≥5 → round up.
- ✔ Answer: 30

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🟨 Problem 4: 59 → ?

- Number line: 50 to 60
- 59 is very close to 60.
- 59 – 50 = 9, 60 – 59 = 1 → much closer to 60.
- Ones digit is 9 → ≥5 → round up.
- ✔ Answer: 60

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🟨 Problem 5: 81 → ?

- Number line: 80 to 90
- 81 is between 80 and 90.
- 81 is closer to 80 (only 1 away) than to 90 (9 away).
- Ones digit is 1 → <5 → round down.
- ✔ Answer: 80

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🟨 Problem 6: 34 → ?

- Number line: 30 to 40
- 34 is between 30 and 40.
- 34 – 30 = 4, 40 – 34 = 6 → closer to 30.
- Ones digit is 4 → <5 → round down.
- ✔ Answer: 30

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🟨 Problem 7: ? → ?

Number line shows: 15 to 20

Wait — the number isn't shown in the box. But looking at the number line, it goes from 15 to 20, and there's a tick mark for 15 and 20.

But we need a number to round. Hmm… likely missing a number.

Wait — actually, looking again:

There are two blank number lines at the bottom:
1. One with 15 to 20
2. One with 65 to 70

And no numbers are written in the boxes on the left. So maybe those are meant to be filled in?

But since they're not labeled, perhaps it's a typo or incomplete.

Wait — let's check the original image description again.

Ah! Actually, the first six rows have numbers on the left: 43, 76, 28, 59, 81, 34.

Then two more rows at the bottom:
- One has a number line from 15 to 20, but no number on the left.
- Another has 65 to 70, also no number.

So possibly these were meant to be filled in separately, but since they’re missing numbers, we can’t solve them unless we assume something.

Alternatively, maybe the task is only the top six.

But wait — perhaps the last two are just for practice and the student is supposed to pick numbers? But that doesn’t make sense.

Wait — maybe I missed something.

Looking carefully at the image:

Actually, the bottom two rows have no numbers in the left box, so likely they are missing.

But let’s double-check the structure:

1. 43 → 40 ✔
2. 76 → ?
3. 28 → ?
4. 59 → ?
5. 81 → ?
6. 34 → ?
7. [No number] → ? (15 to 20)
8. [No number] → ? (65 to 70)

So probably the last two are not part of the main exercise or are incomplete.

But maybe the intention was for students to choose numbers near those ranges? That seems unlikely.

Alternatively, perhaps the number line itself implies a number?

But without a number to round, we can’t proceed.

So let’s assume the main problems are 1 through 6, and the last two are either extra or missing.

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✔ Final Answers (for the numbered ones):

| Number | Rounded to Nearest Ten |
|--------|-------------------------|
| 43 | 40 |
| 76 | 80 |
| 28 | 30 |
| 59 | 60 |
| 81 | 80 |
| 34 | 30 |

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📌 Summary:

Use the number line to see which ten the number is closer to.

- If the number is 5 or more above the lower ten, round up.
- Otherwise, round down.

For example:
- 76 is 6 above 70 → rounds to 80
- 28 is 8 above 20 → rounds to 30
- 59 is 9 above 50 → rounds to 60
- 81 is 1 above 80 → rounds to 80
- 34 is 4 above 30 → rounds to 30

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✔ Final Answers to Fill In:

1. 43 → 40 ✔
2. 76 → 80
3. 28 → 30
4. 59 → 60
5. 81 → 80
6. 34 → 30

> ⚠️ The last two rows (with number lines 15–20 and 65–70) are missing the starting numbers, so they cannot be solved without additional information.

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✔ Answer Key (for the solvable ones):

- 76 → 80
- 28 → 30
- 59 → 60
- 81 → 80
- 34 → 30

Let me know if you'd like help filling in the rest based on assumptions!