To round numbers to the nearest 1000 using a number line, we first need to identify the nearest multiples of 1000 for each number. The general rule for rounding is that if the number is 500 or more, you round up to the next thousand; if it is less than 500, you round down to the previous thousand.
1. For 4658:
- The nearest multiples of 1000 are 4000 and 5000.
- The midpoint between 4000 and 5000 is 4500.
- Since 4658 is greater than 4500, we round up to 5000.
2. For 1234:
- The nearest multiples of 1000 are 1000 and 2000.
- The midpoint between 1000 and 2000 is 1500.
- Since 1234 is less than 1500, we round down to 1000.
3. For 999:
- The nearest multiples of 1000 are 0 and 1000.
- The midpoint between 0 and 1000 is 500.
- Since 999 is greater than 500, we round up to 1000.
Summary:
- 4658 rounds to 5000.
- 1234 rounds to 1000.
- 999 rounds to 1000.