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Addition is the process of calculating the total of two or more numbers or amounts. It is one of the basic operations in arithmetic.

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The plus sign (+) is used to signify addition. For example, in the equation 2 + 3 = 5, the plus sign indicates that 2 and 3 are being added together.

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Single-digit addition involves numbers ranging from 0 to 9. For instance, 4 + 5 equals 9.

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Any number added to zero remains unchanged. For example, 7 + 0 = 7.

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Double-digit addition involves numbers greater than 9. For example, 14 + 27 equals 41. Sometimes this process involves 'carrying over' numbers to the next column.

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Addition can also involve more than two numbers. For instance, 5 + 12 + 7 equals 24.

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There are many online games to practice addition. These games make learning fun and interactive.

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Practice addition and subtraction with our popular math games. Discover fun and engaging learning games for children in grades 1 to 6.

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Worksheets are a great way to practice addition. You can find many printable addition worksheets online.

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1st Grade Math Worksheets: Addition | K5 Learning

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Free 1st grade addition worksheets. Adding with pictures, number lines, mental addition, number bonds, missing addends, adding whole tens, completing the next ten, adding in columns and much more. No login required.