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It is important to round numbers for simplicity's sake. Rounding numbers makes them "friendly" and much easier to work with. "Friendly" numbers allow people to utilize the simplest multiplication, addition, subtraction, division, and/or counting patterns to make calculations and/or estimations. Calculating the cost of 18 items @ $9.65 using mental math is far more complex for most than rounding that to 18 items at $10 to get a rough number. There are obviously times that an exact number is necessary, but even in those instances, rounding is a good tool for checking the validity of your answer by giving you a ballpark figure.
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How many numbers round to 300?
how many numbers round to 300
Is round a verb?
'Round' can be a verb. Example: Round these numbers to the nearest hundred.
How many numbers round to 150 if 150 includes?
An infinite number of numbers would round to 150.
How many numbers round to 400?
350 to 449 -- 100 numbers
Why do we sometime round up or down numbers?
Sometimes you round up or round down numbers to get close to the correct answer so that you can make sure that your answer is right. If your answer is not close to the rounding down of the numbers you are using then you need to look it over and do it again.
