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

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Example Question #1 : Representing And Solving Addition And Subtraction Problems

A large pizza has  slices. If we eat  slices, how many will be left? 

Possible Answers:

Correct answer:

Explanation:

This is a subtraction problem because we want to know how many slices will be left after we eat some. Since we are eating slices, or taking slices away, we will have less than what we started with. 

We can start at  and count back .

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

Emily has  blueberries,  strawberries, and  raspberries on her plate. How many total pieces of fruit does she have? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total pieces of fruit Emily has when we put the blueberries, strawberries, and rapsberries together. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

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

The grocery store has  bottles of soda,  bottles of juice, and  bottles of water. How many total bottles do they have? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total bottles the store has been we put the juice, soda, and water bottles together. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #3 : Word Problems: Addition Of Three Whole Numbers Whose Sum Is 20 Or Less: Ccss.Math.Content.1.Oa.A.2

Suzzy finds  coins under her couch,  in a drawer, and  sitting out on the table. How many total coins does she have? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total coins Suzzy found when she puts all the coins together. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #4 : Word Problems: Addition Of Three Whole Numbers Whose Sum Is 20 Or Less: Ccss.Math.Content.1.Oa.A.2

The carnival game has  different sizes of bears for prizes.  small bears,  medium bears, and  large bears. How many total bears does the carnival game have? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total bears the carnival game has when we put the three sizes together. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #5 : Word Problems: Addition Of Three Whole Numbers Whose Sum Is 20 Or Less: Ccss.Math.Content.1.Oa.A.2

The gumball machine has  red gumballs,  green gumballs, and  yellow gumballs. How many total gumballs are in the machine? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total gumballs there are when we put all 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 #6 : Word Problems: Addition Of Three Whole Numbers Whose Sum Is 20 Or Less: Ccss.Math.Content.1.Oa.A.2

There are three pots of flowers in Hannah’s yard. The first pot has  flowers, the second pot has  flowers, and the third pot as  flowers. How many flowers are in all three pots? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total flowers there are in all the pots put together. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #71 : Operations & Algebraic Thinking

During my hockey game, James scored  goals in the first period, no goals in the second period, and  goals in the third period. How many total goals did James score? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total points were scored when we put all the points together. When we put things together we are adding. 

We can start at  and count up .

Example Question #8 : Word Problems: Addition Of Three Whole Numbers Whose Sum Is 20 Or Less: Ccss.Math.Content.1.Oa.A.2

My candy basket has  sucker,  chocolate bars, and  gummies. How many total pieces of candy do I have? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many pieces of candy when I put the sucker, chocolate and gummies together. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #9 : Word Problems: Addition Of Three Whole Numbers Whose Sum Is 20 Or Less: Ccss.Math.Content.1.Oa.A.2

Lindsey’s family is going on vacation. She packs  bags, her dad packs  bag, and her mom packs  bags. How many total bags are they taking on their vacation? 

Possible Answers:

Correct answer:

Explanation:

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

We can start at  and count up .

Then we can count up .

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