Common Core: 2nd Grade Math : Add and Subtract Within 100: CCSS.Math.Content.2.NBT.B.5

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

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Example Questions

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Example Question #1 : Add And Subtract Within 100: Ccss.Math.Content.2.Nbt.B.5

Solve:

Possible Answers:

Correct answer:

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left. 

4

Let's add the digits in the ones place:

Because the sum is greater than , we have to carry the  to the tens place. So far, your work should look like the following: 

1

Next, we add the numbers in the tens position, including the  that was carried over:

2

Let's add the digits in the tens place:

Your final answer should be 

3

Example Question #1 : Add And Subtract Within 100: Ccss.Math.Content.2.Nbt.B.5

Solve:

Possible Answers:

Correct answer:

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left. 

1

Let's add the digits in the ones place:

Next, we add the numbers in the tens position.

2

Let's add the digits in the tens place:

Your final answer should be 

3

Example Question #3 : Add And Subtract Within 100: Ccss.Math.Content.2.Nbt.B.5

Solve:

Possible Answers:

Correct answer:

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left. 

1

Let's add the digits in the ones place:

Next, we add the numbers in the tens position.

2

Let's add the digits in the tens place:

Your final answer should be 


3

Example Question #4 : Add And Subtract Within 100: Ccss.Math.Content.2.Nbt.B.5

Solve:

Possible Answers:

Correct answer:

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left. 

1

Let's add the digits in the ones place:

Because the sum is greater than , we have to carry the  to the tens place. So far, your work should look like the following: 

2

Next, we add the numbers in the tens position, including the  that was carried over:

3

Let's add the digits in the tens place:

Your final answer should be 


4

Example Question #5 : Add And Subtract Within 100: Ccss.Math.Content.2.Nbt.B.5

Solve:

Possible Answers:

Correct answer:

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left. 

1

Let's add the digits in the ones place:

Next, we add the numbers in the tens position.

2

Let's add the digits in the tens place:

Your final answer should be 

3

Example Question #6 : Add And Subtract Within 100: Ccss.Math.Content.2.Nbt.B.5

Solve:

Possible Answers:

Correct answer:

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left. 

1

Let's add the digits in the ones place:

Because the sum is greater than , we have to carry the  to the tens place. So far, your work should look like the following: 

2

Next, we add the numbers in the tens position, including the  that was carried over:

3

Let's add the digits in the tens place:

Your final answer should be 


4

Example Question #7 : Add And Subtract Within 100: Ccss.Math.Content.2.Nbt.B.5

Solve:

Possible Answers:

Correct answer:

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left. 

5

Let's add the digits in the ones place:

Because the sum is greater than , we have to carry the  to the tens place. So far, your work should look like the following: 

6

Next, we add the numbers in the tens position, including the  that was carried over:

7

Let's add the digits in the tens place:

Your final answer should be 

8

Example Question #8 : Add And Subtract Within 100: Ccss.Math.Content.2.Nbt.B.5

Solve:

Possible Answers:

Correct answer:

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left. 

9

Let's add the digits in the ones place:

Because the sum is greater than , we have to carry the  to the tens place. So far, your work should look like the following: 

10

Next, we add the numbers in the tens position, including the  that was carried over:

11

Let's add the digits in the tens place:

Your final answer should be 

12

Example Question #9 : Add And Subtract Within 100: Ccss.Math.Content.2.Nbt.B.5

Solve:

Possible Answers:

Correct answer:

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left. 

3

Let's add the digits in the ones place:

Next, we add the numbers in the tens position.

14

Let's add the digits in the tens place:

Your final answer should be 


15

Example Question #10 : Add And Subtract Within 100: Ccss.Math.Content.2.Nbt.B.5

Solve:

Possible Answers:

Correct answer:

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left. 

16

Let's add the digits in the ones place:

Because the sum is greater than , we have to carry the  to the tens place. So far, your work should look like the following: 

17

Next, we add the numbers in the tens position, including the  that was carried over:

18

Let's add the digits in the tens place:

Your final answer should be 


19

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