Common Core: 1st Grade Math : Addition within 20 to Solve Word Problems

Study concepts, example questions & explanations for Common Core: 1st Grade Math

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Example Questions

Example Question #1 : Addition Within 20 To Solve Word Problems

Molly has  pencils and Natalie has . How many total pencils do they have if they put theirs together? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because Molly and Natalie are putting their pencils together, and they will have more once they put all the pencils together. 

We can start at  and count up .

Example Question #2 : Addition Within 20 To Solve Word Problems

Tracy picked  strawberries from a bush in her yard, and  strawberries from her neighbors bush. How many strawberries does she have? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because Tracy has two groups of strawberries that she is putting together into one group. When you put things together you are adding. 

We can start at  and count up .

Example Question #1372 : Common Core Math: Grade 1

Zack ate  pieces of chocolate at lunch and  pieces of chocolate after dinner. How many pieces did he eat? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know the total number of pieces of chocolate that Zack ate, we are putting the pieces together that he had at lunch and after dinner. When we put things together we are adding. 

We can start at  and count up .

Example Question #2 : Addition Within 20 To Solve Word Problems

The toy store has  black balls and  red balls. How many total balls do they have? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we are putting the red bals and the black balls together. When we put things together we are adding. 

We can start at  and count up .

Example Question #5 : Addition Within 20 To Solve Word Problems

Lucy is packing a bag for a trip. So far she has  t-shirts and  pairs of shorts.  How many pieces of clothing does she have all together? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we are putting the shirts and the shorts together. When we put things together we are adding. 

We can start at  and count up .

Example Question #6 : Addition Within 20 To Solve Word Problems

Jeff needs to collect leaves for a school project. He picked up  leaves in his front yard and  leaves in his backyard. How many leaves has he collected? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we are putting the leaves that Jeff collected in the front yard together with the leaves he collected in the backyard. When we put things together we are adding. 

We can start at  and count up .

Example Question #411 : Adding And Subtracting Within 20

Tom and Tim both have piggy banks in their rooms. Tom has  coins in his piggy bank and Tim has . How many coins do they have if they put their coins together? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because Tim and Tom are putting their coins together. When we put things together we are adding. 

We can start at  and count up .

Example Question #8 : Addition Within 20 To Solve Word Problems

A furniture store has  tables for sale and  chairs for sale. How many total things do they have for sale? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we are putting the table and chairs together. When we put things together we are adding. 

We can start at  and count up .

Example Question #9 : Addition Within 20 To Solve Word Problems

A candy store has  blue gumballs and  yellow gumballs. How many total gumballs  does the store have? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we are putting the blue and the yellow gumballs together. When we put things together we are adding. 

We can start at  and count up .

Example Question #211 : How To Add

The rose bush has  hot pink roses and  light pink roses. How many total roses does the bush have? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we are putting the hot pink flowers and the light pink flowers together. When we put things together we are adding. 

We can start at  and count up .

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