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 #828 : Operations & Algebraic Thinking

There are  girls and  boys in Mrs. Ray’s class. How many total students does Mrs. Ray have in her class? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total students there are when we put the boys and the girls together. When we put things together we are adding. 

We can start at  and count up .

Example Question #21 : Addition Within 20 To Solve Word Problems

For the school play, there are  singing parts and  talking parts. How many total parts are in the play? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total parts there are when we put the singing and the talking parts together. When we put things together we are adding. 

We can start at  and count up .

Example Question #22 : Addition Within 20 To Solve Word Problems

We ordered a large pizza and a medium pizza. The large pizza has  slices of pizza and the medium pizza has  slices of pizza. How many total slices of pizza are there? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total slices of pizza we have when we put the medium pizza slices together with the large pizza slices. When we put things together we are adding. 

We can start at  and count up .

Example Question #833 : Operations & Algebraic Thinking

The pet store has  tanks for frogs. The first tank has  frogs and the second tank has  frogs. How many total frogs does the pet store have? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we are putting the frogs in the two tanks together. When we put things together we are adding. 

We can start at  and count up .

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