When zero is added to any number, it remains unchanged.
5 + 0 = 5
6 + 0 = 6
7 + 0 = 7
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You add a zero at the end of the factor
if you add it to the back the number would get bigger and if you add it to the front it would stay the same
You can add 3 numbers (or any quantity of numbers) and get a sum.
'Zero' and any other number.
The relationship between addition and subtraction is inverse. We can add two counting numbers together, and we do not need to pay attention to the order of these whole numbers. But, for subtraction, we have to subtract the smallest counting number from the largest counting number.