Name: 
 

Lesson 10 - Adding and Subtrating to Solve Problems



 
Arun and Kailee built two skyscrapers. They used a total of 756 pieces. Arun used 84 more pieces than Kailee. How many pieces did each use? Order the steps used to solve the problem.
a.
Divide the remaining pieces evenly between Kailee and Arun.
grp001-1.jpg
b.
Draw a model showing the total number of pieces. Subtract 84 pieces and from the total number and add them to Arun’s group.
grp001-2.jpg
c.
Regroup to show the number of pieces used by Kailee and the number of pieces used by Arun.
grp001-3.jpg
d.
Arun used 420 pieces and Kailee used 336 pieces.
 

 1. 

What is the first step?
 

 2. 

What is the second step?
 

 3. 

What is the third step?
 

 4. 

What is the final step?
 
 
Jake and Krystal each have a stamp collection. Together they have 426 stamps. Krystal has 74 more stamps than Jake. How many stamps are in each collection? Order the steps used to solve the problem.
a.
Add 74 to the number in Krystal’s collection.
grp002-1.jpg
b.
Divide the remaining number of stamps evenly between Krystal and Jake.
grp002-2.jpg
c.
Subtract 74 from the total number of stamps, and add them to Krystal’s collection.
grp002-3.jpg
d.
Krystal has 250 stamps in her collection and Jake has 176 stamps in his collection.
 

 5. 

What is the first step?
 

 6. 

What is the second step?
 

 7. 

What is the third step?
 

 8. 

What is the final step?
 



 
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