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The only time that I have used a sign is if the last rounded digit is a five. If it has been rounded up from 4, then I would put a superscript "-" after the number and otherwise a superscript "+". Then, if further rounding is required the person doing so knows the provenance of the last digit that (s)he can see.
For example,
346 rounded to the nearest 10 is 350 and rounded to the nearest hundred is 300.
But if you only saw the number rounded to the nearest 10, ie 350, and wanted to round it further you would round it to 400. In this case, what you would see is 350- (- in superscript) which tells you that the 5 is a result of rounding up.
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What is the relationship of rounding and estimating?
Rounding, you see the number and just make it look neater or easier to use. Estimating, you guess a number.
Write a definition of rounding in your own words?
it is like when you have a number you use that number to make it bigger
Where you can use rounding off number in real life?
in math you roud number if that might help
Are the estimates always the same when you use rounding to the nearest whole number and compatible numbers?
no actually
How do you use the word arrow in a sentence?
you use arrow in the following sentances:I shot the arrow at the target.The arrow was made of wood.
