Common Core: 1st Grade Math : Representing and Solving Addition and Subtraction Problems

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

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Example Questions

Example Question #2 : Word Problems: Addition Of Three Whole Numbers Whose Sum Is 20 Or Less: Ccss.Math.Content.1.Oa.A.2

Amy’s street has three houses on it. The first house has  bedrooms, the second house has  bedrooms, and the third house has  bedrooms. How many total bedrooms do the three houses have? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total rooms are in the three houses altogether. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #241 : How To Add

Brian loves balloons. For his birthday, his mom tied  balloons to the mailbox,  balloons to the door, and put  balloons in the house. How many total balloons does Brian have? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total balloons there are when we put the balloons on the mailbox, door, and in the house altogether. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #231 : How To Add

The pet store sells bunnies, fish, and kittens. They have  bunnies,  fish, and  kittens. How many total animals do they have? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many pets the store has when we put the fish, kittens, and bunnies together. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #13 : Word Problems: Addition Of Three Whole Numbers Whose Sum Is 20 Or Less: Ccss.Math.Content.1.Oa.A.2

Rick, his mom, and dad went to the batting cages. Rick hit  balls, his dad hit  balls, and his mom hit  balls. How many total balls did they hit? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total balls the family hit together. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #14 : Representing And Solving Addition And Subtraction Problems

At the store, Megan bought a bag of  apples, a bag of  oranges, and  bananas. How many pieces of fruit did Megan buy? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total pieces of fruit Megan has when we put the apples, organes, and bananas together. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #15 : Representing And Solving Addition And Subtraction Problems

For a project, Tim needs  pieces of blue paper,  pieces of yellow paper, and  pieces of green paper. How many pieces of paper does Tim need? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many pieces of paper Tim needs when we put the three colors together. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #14 : Word Problems: Addition Of Three Whole Numbers Whose Sum Is 20 Or Less: Ccss.Math.Content.1.Oa.A.2

A bag of marbles has  purple marbles,  black marbles, and  red marbles. How many marbles are in the bag? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total marbles are in the bag when we put the colors together. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #17 : Representing And Solving Addition And Subtraction Problems

At the dog park there are  brown dogs,  white dogs, and  black dog. How many dogs are at the park? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total dogs are at the park altogether. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #232 : How To Add

Jessica’s dog eats three times a day. In the morning he eats  cups of food, in the afternoon he eats  cup of food, and in the evening he eats  cups of food. How many total cups of food does Jessica’s dog eat each day? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many cups of food Jessica's dog gets altogether in a day. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #233 : How To Add

Cindy has three sets of steps in her house. There are  steps to walk up to the front door,  steps to get upstairs, and  steps to get into the basement. How many total steps does Cindy have?  

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know the total number of steps in Cindy's house when we put all three sets of steps together. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

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