No, addition is not closed for -1, 0 and 1 because 1+1=2 and that is not one of the numbers you listed
Because -1 is negative one.
Yes, zero is technically bigger than negative one.
All numbers between negative one and zero are negative. When you multiply a number by a negative it becomes negative. Also, all numbers between negative one and zero are decimals. When you multiply a number by a decimal it becomes smaller. Thus, when you multiply a rational number by a number between negative one and zero, it becomes smaller and negative.
ZERO!
Negative one is the biggest negative number because it is just one unit away from zero and all other negative whole numbers are further from zero and thus smaller.
Anything multiplied by zero is equal to zero.
The work done by the Earth on the space station over one complete orbit is zero because the gravitational force is conservative. This means that the work done in moving an object over any closed path is zero.
Zero is more than, not less than the number negative 1.
Yes. -1 + 0 = -1
Adding a negative integer is like subtracting a positive one. If you accept that 7 - 7 = 0 (because anything minus itself equals zero) then it stands to reason that 7 + -7 would equal zero as well.
No. The identity for addition is zero; the identity for multiplication is one.
Integers are the natural numbers (counting numbers: 1,2,3,etc.), and their negative counterparts, and zero. The set of Integers is closed for addition, subtraction, and multiplication, but not division. Closed means that the answer will be a part of the set. Example: 1/3 (1 divided by 3 equals one third) is not an integer, even though both 1 and 3 are integers.