Algebra 1 : How to add integers

Study concepts, example questions & explanations for Algebra 1

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Example Questions

Example Question #132 : Real Numbers

Solve: 

Possible Answers:

Correct answer:

Explanation:

Add the ones digit.  

Carry over the 1 since 11 is ten or greater, and then add the tens digit with the carryover.

Repeat the process for the hundreds digit with the carry over.

Combine all the digits.

The answer is .

Example Question #131 : Real Numbers

Find the sum of .

Possible Answers:

Correct answer:

Explanation:

Since we are adding two negative numbers, the sign of the answer becomes negative. The overall answer is negative; however, we will treat this problem as a normal addition.

The sum is  and we add the negative sign in front to get a final answer of .

Therefore,.

Example Question #131 : Real Numbers

Find the sum of .

Possible Answers:

Correct answer:

Explanation:

Since there are negative numbers, we compare their values without the sign.  is greater than  and is positive. This means the answer is positive and we will treat this problem as normal subtraction.

The difference and our final answer is .

Therefore, .

Example Question #11 : How To Add Integers

What is the sum of the integers  and ?

Possible Answers:

Correct answer:

Explanation:

Since there are no negative numbers, we will simply add as normal.

We get an answer of 

 

Example Question #141 : Real Numbers

What is the sum of the integers , and 

Possible Answers:

Correct answer:

Explanation:

Since there are no negative numbers, we will simply add as normal. Make sure to line up all the ones digit in place and the tens digit.

We get an answer of 

Example Question #141 : Real Numbers

What is the sum of the integers  and ?  

Possible Answers:

Correct answer:

Explanation:

Since there are no negative numbers, we will simply add as normal. Remember to line up the tens and ones digits.

We get an answer of .

Example Question #143 : Real Numbers

Find the sum of .

Possible Answers:

Correct answer:

Explanation:

Since there are negative numbers in this problem, we will compare their values without the sign.  is greater than  and is positive. This means the answer is positive.

We will treat this problem as normal subtraction.

 The difference and our final answer is .

Therefore, 

Example Question #13 : How To Add Integers

Find the sum of .

Possible Answers:

Correct answer:

Explanation:

Since there are negative numbers in this problem, we will compare their values without the sign.  is greater than  and is negative. This means the answer is negative.

We will treat this problem as normal subtraction.

The difference is , but since we want a negative answer our final answer is .

Therefore, .

Example Question #145 : Real Numbers

Find the sum of .

Possible Answers:

Correct answer:

Explanation:

Since we are adding two negative numbers, the sign of the answer becomes negative. The overall answer is negative; however, we will treat this problem as normal addition.

The sum is  and we add the negative sign in front to get a final answer of .

Therefore,.

Example Question #13 : How To Add Integers

Find the sum of .

Possible Answers:

Correct answer:

Explanation:

Since there are negative numbers, we compare their values without the sign.  is greater than  and is negative. This means the answer is negative and we will treat this problem as normal subtraction.

The difference is , but since we want a negative answer our final answer is .

Therefore, .

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