Name ____________________

Date __________________

 

Estimating Sums and Differences

with Decimals

 

Lesson 1

 

Directions: Estimate the sums and differences.

 

Problem:

 

36.14 – 15.61

Solution
Step 1:  

36.14 Rounded to nearest whole number is 36.

Solution
Step 2:          

15.61 Rounded to nearest whole number is 16.        

Solution
Step 3:          

Therefore difference of 36.14 - 15.61 is 36 - 16 = 20

 

Try two practice problems:

 A.

 

19.49 – 12.66

B.  

 

9.15 + 6.11

 



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