Common Core: 6th Grade Math : Fluently Add, Subtract, Multiply, and Divide Multi-Digit Decimals: CCSS.Math.Content.6.NS.B.3

Study concepts, example questions & explanations for Common Core: 6th Grade Math

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Example Questions

Example Question #69 : Adding Multi Digit Decimals

Solve:

Possible Answers:

Correct answer:

Explanation:

 

When we add with multi-digit numbers with decimals, we start with the numbers furthest to the right and work our way towards the left.

Add the numbers in the hundredths place:

Your work should look something like this:

Add the numbers in the tenths place:

Your work should look something like this:

*Notice that the decimal moves directly down when we are adding decimal numbers.

Add the numbers in the ones place:

Your work should look something like this:

Your final answer should be: 56.45

 

Example Question #451 : The Number System

Solve:

Possible Answers:

Correct answer:

Explanation:

 

When we add with multi-digit numbers with decimals, we start with the numbers furthest to the right and work our way towards the left.

Add the numbers in the hundredths place:

Because this sum is greater than 9, we write the 0 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

Add the numbers in the tenths place:

Your work should look something like this:

*Notice that the decimal moves directly down when we are adding decimal numbers.

Add the numbers in the ones place:

Your work should look something like this:

Your final answer should be: 53.80

 

Example Question #71 : Adding Multi Digit Decimals

Solve:

Possible Answers:

Correct answer:

Explanation:

 

When we add with multi-digit numbers with decimals, we start with the numbers furthest to the right and work our way towards the left.

Add the numbers in the hundredths place:

Your work should look something like this:

Add the numbers in the tenths place:

Your work should look something like this:

*Notice that the decimal moves directly down when we are adding decimal numbers.

Add the numbers in the ones place:

Your work should look something like this:

Your final answer should be: 68.66

 

Example Question #72 : Adding Multi Digit Decimals

Solve:

Possible Answers:

Correct answer:

Explanation:

 

When we add with multi-digit numbers with decimals, we start with the numbers furthest to the right and work our way towards the left.

Add the numbers in the hundredths place:

Because this sum is greater than 9, we write the 2 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

Add the numbers in the tenths place:

Because this sum is greater than 9, we write the 4 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

*Notice that the decimal moves directly down when we are adding decimal numbers.

Add the numbers in the ones place:

Because this sum is greater than 9, we write the 1 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

Your final answer should be: 61.42

 

Example Question #73 : Adding Multi Digit Decimals

Solve:

Possible Answers:

Correct answer:

Explanation:

 

When we add with multi-digit numbers with decimals, we start with the numbers furthest to the right and work our way towards the left.

Add the numbers in the hundredths place:

Your work should look something like this:

Add the numbers in the tenths place:

Your work should look something like this:

*Notice that the decimal moves directly down when we are adding decimal numbers.

Add the numbers in the ones place:

Your work should look something like this:

Your final answer should be: 46.29

 

Example Question #74 : Adding Multi Digit Decimals

Solve:

Possible Answers:

Correct answer:

Explanation:

 

When we add with multi-digit numbers with decimals, we start with the numbers furthest to the right and work our way towards the left.

Add the numbers in the hundredths place:

Because this sum is greater than 9, we write the 2 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

Add the numbers in the tenths place:

Your work should look something like this:

*Notice that the decimal moves directly down when we are adding decimal numbers.

Add the numbers in the ones place:

Because this sum is greater than 9, we write the 1 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

Your final answer should be: 41.92

 

Example Question #75 : Adding Multi Digit Decimals

Solve:

Possible Answers:

Correct answer:

Explanation:

 

When we add with multi-digit numbers with decimals, we start with the numbers furthest to the right and work our way towards the left.

Add the numbers in the hundredths place:

Your work should look something like this:

Add the numbers in the tenths place:

Your work should look something like this:

*Notice that the decimal moves directly down when we are adding decimal numbers.

Add the numbers in the ones place:

Because this sum is greater than 9, we write the 1 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

Your final answer should be: 31.10

 

Example Question #76 : Adding Multi Digit Decimals

Solve:

Possible Answers:

Correct answer:

Explanation:

 

When we add with multi-digit numbers with decimals, we start with the numbers furthest to the right and work our way towards the left.

Add the numbers in the hundredths place:

Because this sum is greater than 9, we write the 4 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

Add the numbers in the tenths place:

Because this sum is greater than 9, we write the 0 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

*Notice that the decimal moves directly down when we are adding decimal numbers.

Add the numbers in the ones place:

Because this sum is greater than 9, we write the 2 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

Your final answer should be: 63.04

 

Example Question #77 : Adding Multi Digit Decimals

Solve:

Possible Answers:

Correct answer:

Explanation:

 

When we add with multi-digit numbers with decimals, we start with the numbers furthest to the right and work our way towards the left.

Add the numbers in the hundredths place:

Your work should look something like this:

Add the numbers in the tenths place:

Your work should look something like this:

*Notice that the decimal moves directly down when we are adding decimal numbers.

Add the numbers in the ones place:

Your work should look something like this:

Your final answer should be: 45.57

 

Example Question #1 : Subtracting Multi Digit Decimals

Find the difference.

Possible Answers:

Correct answer:

Explanation:

Finding a difference means to subtract.  

In the hundredths column, we can easily subtract 

In the tenths column we must borrow from the 7 (making it 6) and also making the 2 a 12.  Now we can subtract 

Finally in the ones column we can subtract 

Thus the final answer is 1.43.

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