It increases by a factor of 10.
You add one more zero to the end of the number
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 multiply by 10 (Add a zero)
You have to add the two numbers together then multiply it by 2.
Factors multiply together to become products.
You would multiply 12x5, and then just add a zero. The answer is 600.
Adding zero to a number leaves the number unchanged.
The factor pairs of 3000 all have a product of 3000. None of them add up to -155.
If you add, subtract or multiply rational numbers, the result will be a rational number. It will also be so if you divide by a non-zero rational number. But division by zero is not defined.
If they are multiples of 9, the digits add up to a multiple of 9.
"Factors" are multiplied, not added. Choose any number (except zero) for the first factor. Then divide -9 by that number to get the second factor.