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Add every number from 1 to 10 and you get exactly 55.

Add every number from 1 to 10 and you get exactly 55.

1 + 2 + 3 all the way to 10 makes 55. Big kids learn quick ways to add up long lists of numbers like this!

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Adding means putting groups together to make a bigger number. Adding means putting groups together to make a bigger number. The plus sign (+) tells you to put numbers together. The plus sign (+) tells you to put numbers together. When you add zero to a number, the number stays the same. When you add zero to a number, the number stays the same. You can add numbers in any order and get the same answer. You can add numbers in any order and get the same answer. Adding 1 to a number gives you the very next counting number. Adding 1 to a number gives you the very next counting number.