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Less digits to work with. As an example, to multiply 4000 x 30,000, you only need to multiply 4 x 3, then attach all the zeros (7 zeros in this case) at the end. WITH A LITTLE BIT OF PRACTICE, YOU CAN DO THIS CALCULATION IN YOUR HEAD. However, if there are more significant digits (roughly speaking, non-zero digits), most people would need pencil and paper, or a calculator, to do such a calculation.
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What does rounded up mean?
For cowboys, "rounded up" means "corralled." For mathematicians, "rounded up" means "estimated to a higher number that is shorter or easier to work with."
What are rounded numbers?
Rounding means making a number simpler but keeping its value close to what it was. The result is less accurate, but easier to use. 73.67532 can be rounded to 74.
Why is integers useful?
Integers are whole numbers without decimals or fractions which are useful because calculations are easier to work out.
What is easier to learn numbers or shapes?
Numbers
Why is pi rounded to 3.14?
Because most people find that easier to work with than 3.141592653589792 is,and the answers they get are only 0.051% too small, so why not !
