If 5 divided by 5 is 1,  and 100 divided by 100 is 1.... what is 0 divided by 0?
604013
there is no answer becuase it is impossible to divide by 0
272752
One way to understand this is to think through the meaning of a divided by b. It is a number such that when you multiply by b, you get a. \n\nThus 1 divided by 0 is undefined, because there is no number such that when you multiply it by 0, you get 1.\n\nIn the same way 0/1 is equal to 0, as 1 times 0 is 0.
402291
if you have 5 divided by 235 you would first want to see if 5 could go into the 2 since it can't you would see if it could go into 23 since it can do simple division 5 goes into 23 4 times with 3 left over. you would then divide the 5 by what is left which is the 3 and the 5. taking the 5 it goes into 35  7 times which gives you an answer of 47.  if this doesn't make much sense i have found a website that might help you.
810598
1. 0.4 = 4/10 = 2/5\n\nThis is because 0.4 is basically 4 out of ten. If there is 1 number behind the decimal, it is out of ten. Two numbers, then it is out of one hundred. Three, one thousand. And so on and so forth. 4/10 simplifies to 2/5.\n\n2. 0.04 = 4/100 = 1/25\n\nDitto.\n\n3. 0.84 = 84/100 = 44/50 = 22/25\n\nHope that works for ya. I'm sure it's right. =]\n\nRayy
596523
If you are approaching zero from the left, then -1 divided by 0 is positive infinity.\nIf you are approaching zero from the right, then -1 divided by 0 is negative infinity.\n-1 divided by 0 is undefined because you get different results when coming in from the right side of 0 and the left side of 0.\nI learned this in Calc 1 (possibly Calc 2).\nThere are different levels (degrees) of infinity.
340271
1,000 is correct.\n\n1,000,000,000 / 1,000,000 = 1,000
416203
You divide by 0 when you divide by a-b
885353
Each zero at the end requires a 5 and a 2 somewhere in the factors.  Since there are more twos than 5s, all you need to do is count the number of 5s.  That's still an awfully big task.  Each number that is divisible by 5 has at least one 5 as a factor (e.g., 5, 10, 15...)  Of course there are 2000/5 = 400 of these.\n\nEach number divisible by 25 has at least 2 factors of 5.  There are 2000/25 of these or 80.  We already accounted for one of these 5s in the first count so this adds 80 more.\n\nEach number divisible by 5^3 (125) add another factor of 5 for 2000/125 = 16.\n\nNow, on to 5^4 this time the division is uneven: 2000/625 = 3.2 This means there are 3 numbers below 2000 divisible by 5^4\n\nOnce we get to 5^5 = 3125, it is bigger than 2000 so there are no more factors of 5.\n\nAll in all this comes to:  400 + 80 + 16 + 3 = 499 zeros.\n\nYou also asked about 1000!.  Using the same approach:\n\n200 + 40 + 8 + 1 = 249 zeros
579225
Division by zero is undefined, even if you divide zero into zero.\n\nhttp://en.wikipedia.org/wiki/Division_by_zero
65511
5= 5 'ones'\n.5= 5 tenths (or 5/10)\n.05= 5 one-hundreths (or 5/100)\n.005= 5 thousandths (or 5/1,000)  so...\n.0005= 5 ten-tousandths (or 5/10,000)
997321
Division by 0 is undefined. \n\nIf you divide 4 by 2, you get 2. Reverse the process: 2 multiplied by 2 gives you 4.\n\nThe reason you can't divide by 0 is because you can't multiply 0 by any other number and get a number besides 0.\n\n4 divided by 0 gives you "undefined." That would mean that "undefined" times 0 should equal 4. But that's silly.
395566
1...anything multiplied by 1 is itself...so in division anything divided by itself is 1
890376
Divide the top number of the fraction (numerator, I believe) by the bottom number (denomenator I guess) and it gives you a decimal as easy as 1 2 3. \nExample:\n                 5\n              --------\n                10                      \n\nis 5 divided by 10 is 0.5
81372
I don't mean to be rude, but none of the above answers are quite right, and some are actually quite wrong. 0/0 is not undefined, 0/0 is not always infinity, 0/0 never means "nothing" (in fact, it is used quite frequently in calculus), and although there is no general way to define 0/0, it most certainly can be defined given enough information in a problem.\n\nNormlparker had it closest, when discussing the nature of division. In other words, 10/2 means take 10 things and divide them into 2 equal groups; when you do, each of those groups will contain 5 things, so 10/2=5. Dividing by 0 doesn't conceptually make sense. You can't take 10 things and divide them into no groups. That answer is UNDEFINED. (Captial letters for vocabulary emphasis, not because I am yelling.)\n\nNow dividing 0 by 0 is a different issue, because you can surely take no things and make them into no groups. However, what's the size of those nonexistent groups? It's not infinity, nor is it undefined, as some previous posters have said. Dividing 0 by 0 is an INDETERMINATE value, and it's exactly as you said--it could equal just about anything.\n\nTake for instance the fraction (x^2+2x-3)/(x-1). If you plug x=1 into the fraction, you get 0/0, but the function is definitely not infinity when you get close to x=1. If you factor the numerator, the fraction becomes [(x+3)(x-1)]/(x-1). Cancel those common factors and you get x+3. In other words, this fraction (although undefined at x=1) gets very close to x+3=1+3=4. In this case, 0/0 is basically 4.\n\nTo be specific, a non-zero number divided by 0 approaches infinity (or negative infinity), but 0/0 can approach lots of things. However, ANYTHING divided by 0 is not a real number. \n\nWhen you took your equation (0)(0)=0 and divided both sides by one of the 0s on the left side, you actually violated a mathematical principle. Sure you can divide both sides of an equation by any number, as long as you are certain that number is not 0.\n\nSome of the most famous mathematical fallacies are based upon divideng by 0 in a sneaky way. You can prove lots of untrue things (such as 1=2) if you do that, and it's actually kind of fun. I used to do that once a year in my geometry classes to "prove" to my students all math was worthless, and as soon as they got excited, I showed them how I fooled them. They usually didn't care so much, but nerds like me think that kind of stuff is hilarious.\n\nHere are some other indeterminate values that can equal anything: (0)(infinity), 1^(infinity), (infinity)/(infinity).
97729
divide by ten!\n5mm is 0.5cm so all u need to do is divide the 5 by ten so u get 0.5cm :)
310292
one divided by 8 multiply 100
595633
When you are dividing by something you are trying to find out how many of a certain amount (say, 3) is in another amount (say, 12). The result for my example, is of course 4, since 3 goes into the number 12 four times.\n\nNow the number 0 is nothing, literally. So if you're dividing into, say 12, you're wondering how much nothing is in 12. That's just not possible, because 12 is all "something".\n\nI hope that's clear enough...I tried.\n\nEdit: The guy above me is wrong.