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The plus sign (+) tells you to put numbers together.

The plus sign (+) tells you to put numbers together.

Whenever you see a little +, it means 'add these'. So 2 + 3 means put 2 and 3 together to make 5.

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Adding means putting groups together to make a bigger number. Adding means putting groups together to make a bigger number. 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. Doubles are a magic trick — 5 plus 5 always makes 10! Doubles are a magic trick — 5 plus 5 always makes 10!