...you do realize that integers are just what are commonly called "whole numbers", right?

So, for instance, 3-2 = 1. 2-2 = 0. 5-6 = -1.

As for division, 2/2 = 1, 0/5 = 0, and 3/2 is undefined.

I really don't see where you could possibly be having problem with this. Could you perhaps elaborate what you don't understand?

like ,, im in grade 7 and like um..

okay here is a question on my worksheet.

(-7) - (+3)= what.

There is a certain rule for subtracting.

and

(-25) Divide (+5) = what.

Division works the same way as multiplication. Think about -5 * 5. That equals -25, because you have a negative times a positive (giving you a negative), and because 5*5 = 25.

So, what is 25 / 5? It's 5. But you had a negative & a positive, so, again, the answer is a negative. Thus, -25 / 5 = -5.

With subtraction, it is basically the opposite of addition. Just picture the number line, and remember that adding a positive is the same as subtracting a negative, while adding a negative is the same as subtracting a positive. That is, since adding a positive involves moving right on the number line, subtracting a negative also involves moving right. On the other hand, subtracting a positive involves moving left, and so adding a negative involves moving left.

So, with your question, start at -7 on the number line. Then you're subtracting a positive, so that means you want to move left 3 spots. Thus, your final answer is -10.

In the math book I used in Algebra II, they defined "Whole Numbers" as positive integers and 0, whereas integers could be negative. And then natural numbers (aka counting numbers) where the same was whole numbers, but it excluded 0.

I guess it really isn't distinguished in the math world?