I'm pretty sure it has to do with math equations.
Like this:
120
+230 You would remove the pair of zeros to make it 12+23=35
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350 Then all you do is add the zero back to the end of the answer.
This works for subtracting, multiplying, and dividing, too.
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A zero pair
Yes, it can, it can be 0,0
zero pair
The definition for Zero Pair Is: a pair of number with a positive and negative sign whose sum is zero. (+,-) For example: +2 and -2 is a zero pair First You: add 2 to each side. so then you have: 3x-2+2=4+2 Next You: simplify by removing zero pairs. so you now have: 3x=6 Then you: divide each side into three equal groups. so now you have: 3x=6 _ _ 3 3 Finally: you cross out the three on top and the three on the bottom. Now your left with 3/6! Now you divide 3 and 6. Your answer will be: 2. Answer Is: x=2
How? 10 percent of a number which has at least one zero at the end means that just remove the zero at the end. Only remove one zero. So, the number is 61000. Then, remove the zero. 61000 divided by 10 is 6100. Also you can divide the number by zero.