Round Off Numbers

1.4  Round Off Numbers
 
We will learn to round whole numbers to the nearest ten thousand.  
How to round numbers:  
Step 1 Specify the digit that needs to be rounded.
   
Step 2 Look at the digit to the right of the rounded place value.
   
Step 3  If the digit is smaller than 5, retain the rounded digit.
   
  If the digit is bigger than 5, add 1 to the rounded digit.
   
Step 4 Then, change all the digits on the right of the rounded place value to 0.
   
 
   
EXAMPLE: Round the numbers to the nearest ten thousand.  
Number The digit that needs to be rounded Explanation  Answer
246 534 6 6 is bigger than 5 so 4 needs to be added 1. 250000
642 679 2 2 is smaller than 5 so 2 should be repealed. 640000