Read big numbers by their place value, compare them, and round them. This is the foundation everything else in math sits on.
Every digit has a place, and the place tells you its value. Read the number 3,486:
| Thousands | Hundreds | Tens | Ones |
|---|---|---|---|
| 3 | 4 | 8 | 6 |
| 3,000 | 400 | 80 | 6 |
1. What is the value of the 7 in 5,792?
The 7 is in the hundreds place, so its value is 7 hundreds = 700.
2. Which symbol makes it true? 8,304 ___ 8,340
Thousands and hundreds match. Compare the tens: 0 tens vs 4 tens. 8,304 has fewer, so 8,304 < 8,340.
3. Round 2,648 to the nearest hundred. (Type the number, no comma needed.)
The tens digit is 4 (less than 5), so round down: 2,648 → 2,600.
4. Round 7,159 to the nearest thousand.
The hundreds digit is 1 (less than 5), so round down to 7,000.
5. Which number is the largest?
All start with 9 thousands. Compare hundreds: 9,809 has 8 hundreds — the most.
6. Write the value of the 4 in 14,205.
The 4 is in the thousands place: 4 × 1,000 = 4,000.
7. Round 48,500 to the nearest thousand.
The hundreds digit is 5, so round up: 48,500 → 49,000.