The short answer
One million is written as 1,000,000. It is one thousand groups of one thousand:
1,000 × 1,000 = 1,000,000
This is the most useful way to begin. Counting a million objects one by one is difficult, but thinking about 1,000 equal groups makes the number manageable.
Build one million in groups
Another exact picture is 1,000 pages with 1,000 dots on every page. You would not need to draw all the dots to reason about the total: 1,000 pages × 1,000 dots equals one million dots.
Find one million on a number line
Quarter-million checkpoints divide the journey into four equal jumps. This makes it easier to estimate where other large numbers belong.
250,000 + 250,000 + 250,000 + 250,000 = 1,000,000
For example, 620,000 belongs between 500,000 and 750,000. It is 120,000 past the halfway mark and 130,000 short of three quarters of a million.
Make exactly one million in different ways
Equal groups are not limited to thousands. Each expression below reaches the same total:
The group size and the number of groups change together. Larger groups mean fewer groups are needed; smaller groups mean more are needed.
Where the digits sit
| Millions | Hundred thousands | Ten thousands | Thousands | Hundreds | Tens | Ones |
|---|---|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 0 | 0 | 0 |
The digit 1 is in the millions place. The six zeroes hold every smaller place. See the complete large-number place-value chart or enter a number in the interactive reader to see its groups.
One million measured in time
The number is unchanged, but the unit changes what it means. This is why a useful answer to “How big is one million?” should also ask “one million what?”
Four exact ways to regroup $1,000,000
| Equal group size | Number of groups | Check |
|---|---|---|
| $100 | 10,000 | 10,000 × $100 = $1,000,000 |
| $1,000 | 1,000 | 1,000 × $1,000 = $1,000,000 |
| $10,000 | 100 | 100 × $10,000 = $1,000,000 |
| $100,000 | 10 | 10 × $100,000 = $1,000,000 |
Money is only one unit, but the regrouping principle works for dots, people, distances, data, or any other count.
One million compared with one billion
One billion is 1,000 times one million. A million has six zeroes; a billion has nine.
1,000 × 1,000,000 = 1,000,000,000
If one million seconds is about 11.6 days, one billion seconds is about 31.7 years. Explore the ratios in the million, billion and trillion comparison.
A five-minute grouping activity
- Make 10. Draw or count ten small objects.
- Regroup to 100. Imagine ten copies of your first group.
- Regroup to 1,000. Imagine ten groups of 100.
- Jump to one million. Ask what 1,000 copies of the 1,000 group would contain.
Discussion prompt: At which step did counting one by one stop being useful? Explain why multiplication and grouping are better tools at that scale.
Check your understanding
How many zeroes are in one million?
Six. One million is 1,000,000.
How many thousands make one million?
1,000 thousands, because 1,000 × 1,000 = 1,000,000.
If 750,000 has been counted, how many more are needed to reach one million?
250,000, because 1,000,000 − 750,000 = 250,000.
One million is split into 20 equal groups. How large is each group?
50,000, because 1,000,000 ÷ 20 = 50,000.
Which is larger: 900 million or one billion?
One billion. It equals 1,000 million.
Ready for a new example? Try the big-number practice challenge or make a printable worksheet.