Common Core: 2nd Grade Math : Operations & Algebraic Thinking

Study concepts, example questions & explanations for Common Core: 2nd Grade Math

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Example Questions

Example Question #5 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?


Screen shot 2015 07 20 at 1.04.51 pm

Possible Answers:

Correct answer:

Explanation:

When we count the number of squares in this picture we get . We have  rows with  squares in each row. Our math equation for this picture could be written as 

Example Question #102 : How To Add

What is the equation that shows the sum of the squares represented by this rectangular array?


Screen shot 2015 07 20 at 1.14.34 pm

Possible Answers:

Correct answer:

Explanation:

When we count the number of squares in each box we get . We have  rows with  squares in each row. Our math equation for this picture could be written as  

Example Question #4 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 2.11.33 pm

Possible Answers:

Correct answer:

Explanation:

When we count the number of squares in this picture we get . We have  rows with  squares in each row. Our math equation for this picture could be written as 

Example Question #461 : Operations & Algebraic Thinking

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 3.07.03 pm

Possible Answers:

Correct answer:

Explanation:

When we count the number of squares within the box we get . We have  rows with  squares in each row. Our math equation for this picture could be written as 

Example Question #5 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 3.12.58 pm

Possible Answers:

Correct answer:

Explanation:

When we count the number of squares within the box we get . We have  rows with  squares in each row. Our math equation for this picture could be written as  

Example Question #462 : Operations & Algebraic Thinking

What is the equation that shows the sum of the squares represented by this rectangular array?


Screen shot 2015 07 20 at 1.21.36 pm

Possible Answers:

Correct answer:

Explanation:

When you count the number of squares in this picture you get . We have  rows with  squares in each row. Our math equation for this picture could be written as  

Example Question #11 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?


Screen shot 2015 07 20 at 1.09.58 pm

Possible Answers:

Correct answer:

Explanation:

When we count the number of squares in this picture we get . We have  rows with  squares in each row. Our math equation for this picture could be written as 

Example Question #2453 : Operations

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 2.59.43 pm

Possible Answers:

Correct answer:

Explanation:

When we count the number of squares in this picture we get . We have  rows with  squares in each row. Our math equation for this picture could be written as  

Example Question #1 : Using Addition Within 100 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. We can either add  or

Example Question #144 : How To Add

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 on her plate all together. We can add the numbers is any order,  

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