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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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9y ago

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Rounded numbers are easier to work with because in each number, there are fewer significant digits to work with.

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9y ago
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If you think about it, you can surely figure it out! Would you rather add 4.53895 + 98.11269 ... or add 5 and 99?

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9y ago
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Q: Why are rounded numbers easier to work with?
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