Common Core: 2nd Grade Math : Common Core Math: Grade 2

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

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Example Questions

Example Question #35 : Add And Subtract Within 100: Ccss.Math.Content.2.Nbt.B.5

Solve:

Possible Answers:

Correct answer:

Explanation:

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

Let's look at the numbers in the ones place:

 

Next, we can subtract the numbers in the tens place:

Your final answer should be 

Example Question #1052 : Common Core Math: Grade 2

Solve:

Possible Answers:

Correct answer:

Explanation:

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

Let's look at the numbers in the ones place:

When the top number is smaller than the bottom number, we have to borrow from the number to the left because we can't take  away from  since  is the smaller number. In this case, we are going to look to the . We only ever need to take  away from the number to the left. For this problem, that will leave us with a  to replace the . So far, your work should look something like this:

Remember, we've borrowed  from the tens place, and one ten is equal to . We now add that  to the digit in the ones place, . Your work should look something like this:

Now, we can subtract the numbers in the once place:

Next, we can subtract the numbers in the tens place:

Your final answer should be 

Example Question #1053 : Common Core Math: Grade 2

Solve:

Possible Answers:

Correct answer:

Explanation:

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

Let's look at the numbers in the ones place:

When the top number is smaller than the bottom number, we have to borrow from the number to the left because we can't take  away from  since  is the smaller number. In this case, we are going to look to the . We only ever need to take  away from the number to the left. For this problem, that will leave us with a  to replace the . So far, your work should look something like this:

Remember, we've borrowed  from the tens place, and one ten is equal to . We now add that  to the digit in the ones place, . Your work should look something like this:

Now, we can subtract the numbers in the once place:

Next, we can subtract the numbers in the tens place:

Your final answer should be 

Example Question #1054 : Common Core Math: Grade 2

Solve:

Possible Answers:

Correct answer:

Explanation:

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

Let's look at the numbers in the ones place:

When the top number is smaller than the bottom number, we have to borrow from the number to the left because we can't take  away from  since  is the smaller number. In this case, we are going to look to the . We only ever need to take  away from the number to the left. For this problem, that will leave us with a  to replace the . So far, your work should look something like this:

Remember, we've borrowed  from the tens place, and one ten is equal to . We now add that  to the digit in the ones place, . Your work should look something like this:

Now, we can subtract the numbers in the once place:

Next, we can subtract the numbers in the tens place:

Your final answer should be 

Example Question #1055 : Common Core Math: Grade 2

Solve:

Possible Answers:

Correct answer:

Explanation:

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

Let's look at the numbers in the ones place:

When the top number is smaller than the bottom number, we have to borrow from the number to the left because we can't take  away from  since  is the smaller number. In this case, we are going to look to the . We only ever need to take  away from the number to the left. For this problem, that will leave us with an  to replace the . So far, your work should look something like this:

Remember, we've borrowed  from the tens place, and one ten is equal to . We now add that  to the digit in the ones place, . Your work should look something like this:

Now, we can subtract the numbers in the once place:

Next, we can subtract the numbers in the tens place:

Your final answer should be 

Example Question #1056 : Common Core Math: Grade 2

Solve:

Possible Answers:

Correct answer:

Explanation:

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

Let's look at the numbers in the ones place:

When the top number is smaller than the bottom number, we have to borrow from the number to the left because we can't take  away from  since  is the smaller number. In this case, we are going to look to the . We only ever need to take  away from the number to the left. For this problem, that will leave us with a  to replace the . So far, your work should look something like this:

Remember, we've borrowed  from the tens place, and one ten is equal to . We now add that  to the digit in the ones place, . Your work should look something like this:

Now, we can subtract the numbers in the once place:

Next, we can subtract the numbers in the tens place:

Your final answer should be 

Example Question #41 : Add And Subtract Within 100: Ccss.Math.Content.2.Nbt.B.5

Solve:

Possible Answers:

Correct answer:

Explanation:

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

Let's look at the numbers in the ones place:

When the top number is smaller than the bottom number, we have to borrow from the number to the left because we can't take  away from  since  is the smaller number. In this case, we are going to look to the . We only ever need to take  away from the number to the left. For this problem, that will leave us with a  to replace the . So far, your work should look something like this:

Remember, we've borrowed  from the tens place, and one ten is equal to . We now add that  to the digit in the ones place, . Your work should look something like this:

Now, we can subtract the numbers in the once place:

Next, we can subtract the numbers in the tens place:

Your final answer should be 

Example Question #41 : Add And Subtract Within 100: Ccss.Math.Content.2.Nbt.B.5

Solve:

Possible Answers:

Correct answer:

Explanation:

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

Let's look at the numbers in the ones place:

 Next, we can subtract the numbers in the tens place:

Your final answer should be 

Example Question #1052 : Number & Operations In Base Ten

Solve:

Possible Answers:

Correct answer:

Explanation:

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

Let's look at the numbers in the ones place:

 

Next, we can subtract the numbers in the tens place:

Your final answer should be 

Example Question #1053 : Number & Operations In Base Ten

Solve:

Possible Answers:

Correct answer:

Explanation:

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

Let's look at the numbers in the ones place:

 Next, we can subtract the numbers in the tens place:

Your final answer should be 

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