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 pattern, such as 180, 280, 191 or 291.
Know MoreThe ones digit and tens digit are both examples of place values. Each column in a number to the left or right of the decimal has a place value. If there is a one in the tens column, it represents one set of 10. Likewise, if there is a two in the hundreds column, it represents 2 sets of 100, or 200 total.
Learn more about NumbersThe greatest nine-digit number that can be made using nine different digits is 987,654,321. Using the number zero only makes the largest possible number smaller.
Full Answer >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 any digit from 1 to 9.
Full Answer >The number one is neither prime nor composite. Prime numbers are those defined as natural numbers greater than one not divisible by any other numbers but one and itself. Composite numbers have at least one additional positive divisor and include all whole numbers greater than one that are not prime.
Full Answer >In math, zero is considered to be an even number. In order to be even, a number must be able to be divided exactly by two. Zero qualifies because zero divided by two equals zero.
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