Name ____________________

Date __________________

 

Visually Estimate Sums and Differences

 

Lesson 1

 

Directions: Estimate the sum or differences of each problem by comparing pictures.

 

Problem:

 

 

 html1.jpg

Solution
Step 1:   

 

       

Compare the pictures

                html1-1.jpg

 

Solution
Step 2:          

Add or subtract as directed.

 

                html1-1.jpg

               

 

(Pig + Butterfly + Snail + Snail + Cock + Spider)  - (Snail + butterfly)

= (Pig + Cock + Spider + Snail)

 

 

Try two practice problems:

 

 A.  

 

 

html2.jpg

           

 

 

 

B.  

 

                                                 html3.jpg

 

 

     

 


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