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# How Do You Calculate the Value of an Underlined Digit?

**The value of an underlined digit is calculated by multiplying its place value by the value of the single digit.** Place value is defined as the value of the place of a digit in a number.

In a number, place values from right to left are ones, tens, hundreds, thousands, ten-thousands, hundred-thousands, millions and so on. By definition, a place value number is a 1 followed by a number of zeros. An example calculation of the value of an underlined digit would be if the digit 4 were underlined in 1040, the underlined value of that digit would be 40.

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