Welcome to Adding


Our Adding Calculator below can add numbers, but what makes this Adding Calculator unique is that it can handle not only decimals, but also negative numbers.

Sometimes it may be confusing to add a positive number with a negative number or maybe a negative number with a negative number. This calculator will give you the answer with ease.


As you can see from the results above, we not only give you the answer to the addition problem, but also the answer to subtracting, multiplying, and dividing your two numbers.

Answers are rounded to four decimals if necessary. Enter negative numbers with a "-" in front of the number. Positive numbers can be entered without the plus sign.

We can do a lot more! Check out our Directory for calculators and tools. Here are some examples of adding problems we explain and solve:

Addition Worksheet #903

Adding Binary Numbers

Adding Test

Count by 6

What is the sum of the first 100 odd numbers?

Additive inverse of 18

What is 2 plus 5/4?

The sum of two numbers is 14 and their difference is 6

What is 6/5 plus 2?

What two numbers have a product of 44 and a sum of 24?

What plus 1 equals 1/4?

Ratio of 2 to 3

4 plus what equals 13?

What plus 35 equals 90?

How to calculate 12 plus 15 using Long Addition

What is 1/3 plus 2/5?

What is the sum of the GCF and LCM of 25 and 65?

What two numbers add up to 29?

What is 100 plus 20 percent?

What is sum of the first 20 even numbers?

What number is 12 more than 53?

What 2 square numbers make 34?

What is the sum of the first 10 prime numbers

Factors of 36 that add up to 12

What is the EMI for a 10 lakhs loan?

What is the sum of 4 and 5?

28 is what percent of 50?

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