Welcome to the addition calculator, which is a commonly used for adding two numbers, both numbers are based on the decimal system. This calculator can not only solve integers addition, decimal addition, single, two-digit, three-digit or multi-digit addition, but also the addition of negative numbers, big numbers or scientific notation. Using this addition calculator, you can easily solve the problem of adding two numbers, look forward to your use.
Of course, if you want to understand the internal logic of addition, you can refer to our plus symbol article, which describes the entire specific calculation process.
As a reminder, if you want to calculate the addition of more than 2 numbers, you can use our other tool: Long Addition Calculator. If these numbers are consecutive integers, you can use sum of consecutive integers calculator, which is more convenient
Using this addition calculator is very simple, just 3 steps:
Enter the first addend in the input box, which can be an integer, decimal, negative or scientific notation.
Enter the second addend, similar to the first.
Click calculate button, the addition calculator will give the answer immediately.
Believe me, this tool is very easy to use, you will know that after a try. If you still find it difficult, please take a look at some examples below!
In this chapter, some examples are listed for your reference:
E.g. Sum of one digit number 5 and 8
Enter 5 in the first input box, enter 8 in the second input box, then click calculate button, the result 13 will appear immediately.
5 + 8 = 13
E.g. Add the numbers 20 and 45
Enter first number 20, then enter second number 45. Click calculate button, the result 65 will show.
20 + 45 = 65
E.g. Sum of 3 digit 120 and 660
First enter number 120, second enter number 660, then click calculate button. The result 780 will show up.
120 + 660 = 780
E.g. Add the numbers 4 digits 2020 and 5 digits 15000
Enter first number 2020, then enter second number 15000. Click calculate button, the result 17020 will show.
2020 + 15000 = 17020
E.g. Add the integers 21 and 30
Enter the integers 21 and 30 in the two input boxes, and click the calculate button.
21 + 30 = 51
E.g. Add the decimals numbers 2.5 and 12.83
Enter decimals number 2.5 in the first input box, enter decimals number 12.83 in the second input box, then click calculate button.
2.5 + 12.83 = 15.33
E.g. Sum of integer 50 and decimals 6.5
Put the integer 50 in the first input box, and put the decimals 6.5 in the second input box, next click calculate button.
50 + 6.5 = 56.5
E.g. Sum of negative numbers -3 and -91
Enter the negative number -3 in the first input box, enter the negative number -91 in the second input box, then click calculate button, the result -94 will appear immediately.
-3 + -91 = -94
E.g. Sum of scientific notation numbers 1.5e+15 and 6.0e10
Enter the scientific notation number 1.5e+15 in the first input box, enter the scientific notation number 6.0e10 in the second input box, then click calculate button.
1.5e+15 + 6.0e10 = 1500060000000000
E.g. Sum of large numbers 60000000000000000000000000 and 912222222222222222222
Enter the large notation number 60000000000000000000000000 in the first input box, enter the large number 912222222222222222222 in the second input box, then click calculate button.
60000000000000000000000000 + 912222222222222222222 = 6.0000912222222E+25
Well, with the above content, you should be able to easily use the addition calculator we provide. Here are some common problems:
It is perfectly possible, such as: 5 + 6.8 = 11.8.
Yes, no problem, remember to enter the negative sign before the negative number.
You can enter more than 30 digits, this should be able to satisfy your use.
Of course you can, such as adding 2 digits to 4 digits: 15 + 2000 = 2015.
Yes, just enter it directly. Eg. 1.5e+15 + 6.0e10 = 1500060000000000
No problem at all, just like adding different digits. E.g. 1.5e+15 + 80 = 1500000000000080
No, you don’t need to enter the plus sign. Just enter the numbers directly.
Yes, you have to enter a negative sign so that our calculator will understand that it is a negative number.
The above is all about the addition calculator. If you have any questions, please leave a message to us. We will reply to you as soon as possible, thank you!
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