Rounding Numbers Based on Underlined Digits

Round each number to the place value of the underlined digit.

1. 25 230 - the underlined digit is 5
2. 48 870 - the underlined digit is 8
3. 67 239 - the underlined digit is 6
4. 98 345 -the underlined digit is 9
5. 490 631 -the underlined digit is 9

To round each number to the place value of the underlined digit, we look at the digit immediately to the right of the underlined digit. If that digit is 5 or greater, we round up; if it is less than 5, we round down.

1. 25,230 (the underlined digit is 5, which is in the hundreds place):

   • The digit to the right is 2 (in the tens place).
   • Since 2 is less than 5, we round down.
   • Rounded number: 25,200

2. 48,870 (the underlined digit is 8, which is in the thousands place):

   • The digit to the right is 7 (in the hundreds place).
   • Since 7 is 5 or greater, we round up.
   • Rounded number: 48,900

3. 67,239 (the underlined digit is 6, which is in the ten-thousands place):

   • The digit to the right is 7 (in the thousands place).
   • Since 7 is 5 or greater, we round up.
   • Rounded number: 70,000

4. 98,345 (the underlined digit is 9, which is in the ten-thousands place):

   • The digit to the right is 8 (in the thousands place).
   • Since 8 is 5 or greater, we round up.
   • Rounded number: 100,000

5. 490,631 (the underlined digit is 9, which is in the hundred-thousands place):

   • The digit to the right is 0 (in the ten-thousands place).
   • Since 0 is less than 5, we round down.
   • Rounded number: 490,000

Here are the rounded numbers:

1. 25,200
2. 48,900
3. 70,000
4. 100,000
5. 490,000