Name ____________________

Date __________________

 

Estimating Sums and Differences

with Fractions

 

Lesson 1

 

Directions: Estimate the sum or difference for each problem.

 

Problem:

 

46 - 23   

    

 

Solution
Step 1:  

46  Rounded to nearest whole number is 47.         

 

 

Solution
Step 2:          

23 Rounded to nearest whole number is 24.              

               

Therefore the difference of 46 - 23  is 47 - 24 = 23.

 

Try two practice problems:

 A.

 

59 - 20           

B.  

 

27 + 6            

 



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