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# What Is an Estimated Digit?

**The last digit in any number is referred to as the estimated digit.** In science, all other numbers are considered significant digits because they are precise measurements.

The last number in a measurement in science is simply an estimation. For example, if a metal rod measures slightly over 234 inches, the final measurement can be rounded so the answer is 234 instead of 234.2. The more significant numbers a digit has, the more precise the measurement. A significant number includes all non-zero numbers, all zeros that fall between two significant digits and all zeros that are to the right of a decimal point or to the right of a non-zero number.

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Q:
## What Number Has a Tens Digit That Is Eight More Than the Ones Digit?

A: The two numbers that have a tens digit that is eight more than the ones digit are 80 and 91. Note that there are some larger numbers that also exhibit this... Full Answer >Filed Under: -
Q:
## What Is a Nonzero Digit?

A: A nonzero digit is a numerical digit that is not equal to zero. A digit is a numerical symbol that represents an integer from 0 to 9, so a nonzero digit is... Full Answer >Filed Under: -
Q:
## What Are the Multiples of Six?

A: There is an infinite number of multiples of six. A multiple of six is any number that is divisible by six, such as 12, 24, 360 or 7,907,560,848 Full Answer >Filed Under: -
Q:
## What Is the Multiplicative Inverse of a Negative Number?

A: The multiplicative inverse of a negative number must also be a negative number. By definition, the product of a number and its multiplicative inverse is (p... Full Answer >Filed Under: