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Addition Calculator

Add two or more numbers instantly with step-by-step column method and real-time results.

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NUMBERS

NUMBER TYPES

Steps

SHOWN

Integer & Decimal

Large Numbers

Negative Support

Column Method

Addition Calculator

Number Type

Numbers to Add

Number 1

Number 2

How It Works

Select the number type — Integer, Decimal, Large, or Negative based on the values you're working with.

Enter your numbers in the input fields. Click "Add another number" to add more than two numbers at once.

Click Calculate to instantly see the sum, expression, and step-by-step column method breakdown.

The column method aligns digits by place value — ones under ones, tens under tens — making carries easier to track.

Column Example

245

+ 378

623

Properties of Addition

Commutative: a + b = b + a

Associative: (a+b)+c = a+(b+c)

Identity: a + 0 = a

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