I. 2 2 2 2 2 2 2 2. You use the method of subtraction, if you can subtract the number that corresponds with the value you “2” you are dealing with you need to place a 1 under the 2 that corresponds with the number you are subtracting. This is like saying yes the number works. If it doesn’t subtract you place a zero underneath the “2” that you are dealing with, this is like saying “no” it doesn’t represent anything. That is the basic formula for doing binary. With the math diagram I can will show the practice in more detail.
II. 10 is the same as 0010 because in binary a “zero “doesn’t represent a value. It does however represent a “place” so you definitely need to place the “zeroes” in accordingly.