Worksheet for students to complete a bar graph based on the most visited museums worldwide, including rounding visitor numbers and calculating differences.

Let’s solve this step by step.

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Step 1: Round each visitor number to the nearest 100 thousand.

We look at the “Visitors in 2010” column and round each number to the nearest 100,000.

- Louvre: 8,500,000 → already ends in 00,000 → stays 8,500,000
- British Museum: 5,842,140
Look at the ten-thousands place (the 4 in 842,140). Since 4 < 5, we round down → 5,800,000
- Metropolitan Museum of Art: 5,216,990
Ten-thousands digit is 1 → less than 5 → round down → 5,200,000
- Tate Modern: 5,061,170
Ten-thousands digit is 6 → 6 ≥ 5 → round up → 5,100,000
- National Gallery: 4,954,410
Ten-thousands digit is 5 → round up → 5,000,000
- National Gallery of Art: 4,775,110
Ten-thousands digit is 7 → round up → 4,800,000

So the completed table for “Nearest 100 thousand” is:

| Museum | Where | Visitors in 2010 | Nearest 100 thousand |
|-------------------------|-------------|------------------|----------------------|
| Louvre | Paris | 8,500,000 | 8,500,000 |
| British Museum | London | 5,842,140 | 5,800,000 |
| Metropolitan Museum | New York | 5,216,990 | 5,200,000 |
| Tate Modern | London | 5,061,170 | 5,100,000 |
| National Gallery | London | 4,954,410 | 5,000,000 |
| National Gallery of Art | Washington | 4,775,110 | 4,800,000 |

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Step 2: Complete the bar graph.

The vertical axis goes from 4 to 9 — these represent millions (since 8,500,000 = 8.5 million).

Each small square on the grid represents 0.1 million (or 100,000), because between 8 and 9 there are 10 squares → so each square = 0.1 million.

Now draw bars for each museum using the rounded numbers (in millions):

- Louvre: 8.5 → bar goes halfway between 8 and 9 → already drawn.
- British Museum: 5.8 → go up to 5.8 (8 squares above 5)
- Metropolitan: 5.2 → 2 squares above 5
- Tate Modern: 5.1 → 1 square above 5
- National Gallery: 5.0 → exactly at 5
- National Gallery of Art: 4.8 → 8 squares above 4

(You would draw these bars on the graph accordingly.)

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Step 3: Label the vertical axis.

Since the numbers are in millions (e.g., 8.5 means 8.5 million visitors), label the vertical axis as:

“Number of Visitors (in millions)”

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Step 4: Find the difference between most visited and least visited museums.

From the original data (not rounded):

- Most visited: Louvre → 8,500,000
- Least visited: National Gallery of Art → 4,775,110

Difference = 8,500,000 - 4,775,110

Let’s calculate:

8,500,000
-4,775,110
= ?

Start from the right:

0 - 0 = 0
0 - 1 → can’t do → borrow → 10 - 1 = 9 (but next digit becomes 9)
Actually, better to do it step by step:

8,500,000
-4,775,110
------------

Break it down:

8,500,000 - 4,000,000 = 4,500,000
Then subtract 775,110 more:

4,500,000 - 775,110

→ 4,500,000 - 700,000 = 3,800,000
→ 3,800,000 - 75,110 = ?

3,800,000 - 75,000 = 3,725,000
Then subtract 110 → 3,725,000 - 110 = 3,724,890

Wait — let me double-check with direct subtraction:

```
8,500,000
- 4,775,110
-----------
```

Align:

8,500,000
- 4,775,110
= ?

Start from rightmost digit:

0 - 0 = 0
0 - 1 → borrow → 10 - 1 = 9, but the next 0 becomes 9 (after borrowing chain)

Actually, easier to write:

8,500,000 = 8,499,999 + 1 → but maybe just use calculator-style:

8,500,000 minus 4,775,110:

Subtract 4,775,110 from 8,500,000:

First, 8,500,000 - 4,775,110 = (8,500,000 - 4,775,000) - 110 = 3,725,000 - 110 = 3,724,890

Yes.

So the difference is 3,724,890

But wait — the question says “on the list”, and we’re to use the actual numbers given, not rounded ones. So yes, 8,500,000 - 4,775,110 = 3,724,890.

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Final Answer:
3,724,890