Worked examples
Two examples
Example 1
Fill in the sign: 4,072 ___ 4,027
- Both have four digits, so compare from the left.
- Thousands: 4 and 4, the same. Hundreds: 0 and 0, the same. Tens: 7 is more than 2.
- The sign opens toward the larger number.
Answer: 4,072 > 4,027
Example 2
Put in order, least to greatest: 3,510, 3,105, 3,501, 3,150
- All have four digits, and all start with 3.
- Hundreds: 1, 1, 5, 5. So 3,105 and 3,150 come first; their tens, 0 and 5, put 3,105 first.
- Then 3,501 and 3,510; their tens, 0 and 1, put 3,501 first.
Answer: 3,105, 3,150, 3,501, 3,510
Where this is taught: Quiz 2: Comparing, Ordering, and Rounding, “Comparing: count first, then walk”
The drill
Ten problems
How many:
Tap the sign that makes each statement true, or tap the numbers from least to greatest. Then press Check my answers at the bottom.Write your answer on the line, or circle it. The answer key, with the reasoning, is on the last page.