Common Core: 1st Grade Math : Operations & Algebraic Thinking

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

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Example Questions

Example Question #91 : Operations & Algebraic Thinking

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 .

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

Joe spent  minutes cleaning his room,  minutes cleaning his bathroom, and  minutes helping his mom clean the kitchen. How much time did Joe spend cleaning? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total minutes Joe spent cleaning altogether. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #92 : Operations & Algebraic Thinking

At school we had a hotdog-eating contest. I ate  hotdogs, Mel ate  hotdogs, and Eric ate  hotdogs. How many total hotdogs did we eat? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many hotdogs we ate altogether. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #93 : Operations & Algebraic Thinking

At the cakewalk there are  chocolate cakes,  yellow cakes, and  white cakes. How many total cakes are there? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many cakes are at the cake walk altogether. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #21 : Representing And Solving Addition And Subtraction Problems

At Linda’s birthday party there were  peperoni pizzas,  sausage pizzas, and  cheese pizzas. How many total pizzas were there? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total pizzas we have when we put the pizzas altogether. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #92 : Operations & Algebraic Thinking

Lauren has  pencils,  markers, and  notebooks in her backpack. How many total items does Lauren have in her backpack? 

Possible Answers:

Correct answer:

Explanation:

This is an addition problem because we want to know how many total supplies Lauren has in her backpack when we put everything together. When we put things together we are adding. 

We can start at  and count up .

Then we can count up .

Example Question #1 : Relate Counting To Addition And Subtraction: Ccss.Math.Content.1.Oa.C.5

Fill in the blank. _________,

 

Possible Answers:

Correct answer:

Explanation:

In this series we are adding  each time, or counting by , ,  and 

Example Question #1 : Adding And Subtracting Within 20

Fill in the blank , , __________, ,

Possible Answers:

Correct answer:

Explanation:

In this series we are adding  each time, or counting by , and 

Example Question #2 : Relate Counting To Addition And Subtraction: Ccss.Math.Content.1.Oa.C.5

Fill in the blank , , , __________,  

 

Possible Answers:

Correct answer:

Explanation:

 In this series we are adding  each time, or counting by  and .

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