Rounding Big Numbers

4,948,679.458

Round this number to…

1. Nearest hundred thousands.
 4,948,679.458 
4,900,000 is before 4,948,679.458 and 5,000,000 is after. Since number 4 in ten thousands place is not greater than 5 then I will round it down to 4,900,000. 

2. Nearest tenths. 
4,948,679.458 
4,948,679.4 is before 4,948,679.458 and 4,948,679.5 is after. Since the hundredths place is 5 I will round it up to 4,948,679.5. 

3. Nearest whole number. 
4,948,679.458 
4,948,679 is before 4,948,679.458 and 4,948,680 is after. Since number 4 in the tenths place is not greater than 5 then I will round it down to 4,948,679. 

4. Nearest hundreds. 
4,948,679.458 
4,948,600 is before 4,948,679.458 and 4,948,700 is after. Since number 7 in the tens place is greater than 5 then I will round it up to 4,948,700. 

5. Nearest ten thousands 
4,948,679.458 
4,940,00 is before 4,948,679.458 and 4,950,000 is after. Since number 8 in the thousands place is greater than 5 then I will round it up to 4,950,000. 

6. Nearest hundredths. 
4,948,679.468 
4,948,679.45 is before 4,948,679.458 and 4,948,679.46 is after. Since number 8 in the thousandths place is greater than 5 then I will round it up to 4,948,679.46. 

7. Nearest thousands. 
4,948,679.458 
4,948,000 is before 4,948,679.458 and 4,949,000 is after. Since number 6 in the hundreds place is greater than 5 then I will round it up to 4,949,000. 

8. Nearest millions. 
4,948,679.458 
4,000,000 is before 4,948,679.458 and 5,000,000 is after. Since number 9 in the hundred thousands is greater than 5 I will round up to 5,000,000.