Worked examples
Two examples
Example 1
Round 4,762 to the nearest hundred.
- The hundreds digit is 7. Look at the digit to its right, 6.
- 6 is 5 or more, so round up: the 7 becomes 8, and every place after it becomes 0.
Answer: 4,800
Example 2
Round 3,962 to the nearest hundred.
- The hundreds digit is 9. The digit to its right, 6, is 5 or more, so round up.
- Rounding up a 9 makes 10: write 0 and carry 1 into the thousands, so 3 becomes 4.
Answer: 4,000
Where this is taught: Quiz 2: Comparing, Ordering, and Rounding, “Rounding: the nearest landmark”
The drill
Ten problems
This drill also has challenge problems. They use the same skill, set up the way the GED test sometimes sets up a problem, so that it looks new at first.
How many:
Type each answer, then press Check my answers at the bottom. Commas in large numbers are fine.Write each answer on the line. The answer key, with the reasoning, is on the last page.