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

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

varsity tutors app store varsity tutors android store

Example Questions

Example Question #9 : Determine Even Or Odd Number Of Objects: Ccss.Math.Content.2.Oa.C.3

Is there an even or an odd number of dots below? 


Screen shot 2015 12 01 at 10.45.31 am

Possible Answers:

Both

Even

Odd

Neither

Correct answer:

Even

Explanation:

When trying to decide if we have an even or an odd number of items, we can put the items in pairs of two. If each item is in a pair, then we have an even number of items. If there is one item that isn't in a pair, then we have an odd number of items. 

In this case, our dots are in pairs of two, so we have an even number of dots. 

Example Question #10 : Determine Even Or Odd Number Of Objects: Ccss.Math.Content.2.Oa.C.3

Is there an even or an odd number of dots below? 

Screen shot 2015 12 01 at 10.45.39 am

Possible Answers:

Both

Even

Neither

Odd

Correct answer:

Odd

Explanation:

When trying to decide if we have an even or an odd number of items, we can put the items in pairs of two. If each item is in a pair, then we have an even number of items. If there is one item that isn't in a pair, then we have an odd number of items. 

In this case, we have one dot not in a pair, so we have an odd number of dots. 

Example Question #441 : Operations & Algebraic Thinking

Is there an even or an odd number of dots below? 

 

Screen shot 2015 12 01 at 10.45.47 am

Possible Answers:

Even

Neither

Odd

Both

Correct answer:

Even

Explanation:

When trying to decide if we have an even or an odd number of items, we can put the items in pairs of two. If each item is in a pair, then we have an even number of items. If there is one item that isn't in a pair, then we have an odd number of items. 

In this case, our dots are in pairs of two, so we have an even number of dots. 

Example Question #442 : Operations & Algebraic Thinking

Is there an even or an odd number of dots below? 


Screen shot 2015 12 01 at 10.46.05 am

Possible Answers:

Odd

Both

Even

Neither

Correct answer:

Odd

Explanation:

When trying to decide if we have an even or an odd number of items, we can put the items in pairs of two. If each item is in a pair, then we have an even number of items. If there is one item that isn't in a pair, then we have an odd number of items. 

In this case, we have one dot not in a pair, so we have an odd number of dots. 

Example Question #443 : Operations & Algebraic Thinking

Is there an even or an odd number of dots below? 

Screen shot 2015 12 01 at 10.54.02 am

 

Possible Answers:

Even

Neither

Odd

Both

Correct answer:

Even

Explanation:

When trying to decide if we have an even or an odd number of items, we can put the items in pairs of two. If each item is in a pair, then we have an even number of items. If there is one item that isn't in a pair, then we have an odd number of items. 

In this case, our dots are in pairs of two, so we have an even number of dots. 

Example Question #444 : Operations & Algebraic Thinking

Is there an even or an odd number of dots below? 

Screen shot 2015 12 01 at 10.54.13 am

 

Possible Answers:

Odd

Both

Even

Neither

Correct answer:

Odd

Explanation:

When trying to decide if we have an even or an odd number of items, we can put the items in pairs of two. If each item is in a pair, then we have an even number of items. If there is one item that isn't in a pair, then we have an odd number of items. 

In this case, we have one dot not in a pair, so we have an odd number of dots. 

Example Question #445 : Operations & Algebraic Thinking

Is there an even or an odd number of dots below? 

 

Screen shot 2015 12 01 at 10.54.23 am

Possible Answers:

Odd

Even

Both

Neither

Correct answer:

Even

Explanation:

When trying to decide if we have an even or an odd number of items, we can put the items in pairs of two. If each item is in a pair, then we have an even number of items. If there is one item that isn't in a pair, then we have an odd number of items. 

In this case, our dots are in pairs of two, so we have an even number of dots. 

Example Question #446 : Operations & Algebraic Thinking

Is there an even or an odd number of dots below? 

Screen shot 2015 12 01 at 10.54.34 am

 

Possible Answers:

Neither

Odd

Even

Both

Correct answer:

Odd

Explanation:

When trying to decide if we have an even or an odd number of items, we can put the items in pairs of two. If each item is in a pair, then we have an even number of items. If there is one item that isn't in a pair, then we have an odd number of items. 

In this case, we have one dot not in a pair, so we have an odd number of dots. 

Example Question #447 : Operations & Algebraic Thinking

Is there an even or an odd number of dots below? 

 

Screen shot 2015 12 01 at 10.54.43 am

Possible Answers:

Neither

Odd

Even

Both

Correct answer:

Even

Explanation:

When trying to decide if we have an even or an odd number of items, we can put the items in pairs of two. If each item is in a pair, then we have an even number of items. If there is one item that isn't in a pair, then we have an odd number of items. 

In this case, our dots are in pairs of two, so we have an even number of dots. 

Example Question #448 : Operations & Algebraic Thinking

Is there an even or an odd number of dots below? 

Screen shot 2015 12 01 at 10.54.53 am

 

Possible Answers:

Both

Even

Odd

Neither

Correct answer:

Odd

Explanation:

When trying to decide if we have an even or an odd number of items, we can put the items in pairs of two. If each item is in a pair, then we have an even number of items. If there is one item that isn't in a pair, then we have an odd number of items. 

In this case, we have one dot not in a pair, so we have an odd number of dots. 

Learning Tools by Varsity Tutors