Common Core: 3rd Grade Math : Common Core Math: Grade 3

Study concepts, example questions & explanations for Common Core: 3rd Grade Math

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Example Questions

Example Question #7 : Subtracting Within 1000

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, let's look at the numbers in the tens place:

 

Finally, we can subtract the numbers in the hundreds place:

Your final answer should be 

Example Question #8 : Subtracting Within 1000

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, let's look at the numbers in the tens place:

 Finally, we can subtract the numbers in the hundreds place:

Your final answer should be 

Example Question #9 : Subtracting Within 1000

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, let's look at the numbers in the tens place:

 Finally, we can subtract the numbers in the hundreds place:

Your final answer should be 

Example Question #10 : Subtracting Within 1000

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, let's look at the numbers in the tens place:

 

Finally, we can subtract the numbers in the hundreds place:

Your final answer should be 

Example Question #2021 : Common Core Math: Grade 3

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, let's look at the numbers in the tens place:

 

Finally, we can subtract the numbers in the hundreds place:

Your final answer should be 

Example Question #31 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Solve the following:

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, let's look at the numbers in the tens 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 hundreds place, so we can put a  in front of the number in the tens place. So far, your work should look something like this:

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

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

Your final answer should be 

Example Question #1 : Multiply And Divide Within 100 To Solve Word Problems: Ccss.Math.Content.3.Oa.A.3

There are  boxes of oranges. Each box contains  oranges. How many oranges are there? 

Possible Answers:

Correct answer:

Explanation:

Looking at the picture below, we have  groups, each with  oranges. To find the total we could add  to itself  times, or we could do multiplication. Remember, multiplication is the same thing as repeated addition. 

Let's let  equal the total number of oranges. 

Our equation is 

5x3

 

Example Question #1 : Multiplying Within 100 To Solve Word Problems

There are  boxes of oranges. Each box contains  oranges. How many oranges are there? 

 

Possible Answers:

Correct answer:

Explanation:

Looking at the picture below, we have  groups, each with  oranges. To find the total we could add  to itself  times, or we could do multiplication. Remember, multiplication is the same thing as repeated addition. 

Let's let  equal the total number of oranges. 

Our equation is 

4x3

Example Question #2 : Multiplying Within 100 To Solve Word Problems

There are  boxes of oranges. Each box contains  oranges. How many oranges are there? 

 

Possible Answers:

Correct answer:

Explanation:

Looking at the picture below, we have  groups, each with  oranges. To find the total we could add  to itself  times, or we could do multiplication. Remember, multiplication is the same thing as repeated addition. 

Let's let  equal the total number of oranges. 

Our equation is 

3x3

Example Question #3 : Multiply And Divide Within 100 To Solve Word Problems: Ccss.Math.Content.3.Oa.A.3

There are  boxes of oranges. Each box contains  oranges. How many oranges are there? 

 

Possible Answers:

Correct answer:

Explanation:

Looking at the picture below, we have  groups, each with  oranges. To find the total we could add  to itself  times, or we could do multiplication. Remember, multiplication is the same thing as repeated addition. 

Let's let  equal the total number of oranges. 

Our equation is 

5x2

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