The value of an underlined digit in a given number expresses how much that digit is worth. To determine the digit’s value, multiply it by its place value. The underlined figure tells how many sets of the place value there are in the number.
Know MoreIf seven is underlined in 751, seven must be multiplied to 100, since it is in the hundredth place. There are seven sets of hundreds in the number. Therefore, the value of seven in 751 is 700. In the same number, if one is underlined, the value is also one, since it represents only one set in the place of one.
Learn more in Arithmetic"Digits" are the symbols or characters used to represent a number visually. A number like five contains one digit, whereas a number like 555 contains three digits. This is easily seen when they are written as numerals: 5 versus 555.
Full Answer >Two-digit numbers can be multiplied by lining up the ones value and the tens value and summing the vertical lines. If a two-digit number is multiplied by a one-digit number, then the ones value and the tens value are summed separately and the former is added after the latter.
Full Answer >To multiply two-digit numbers, write the first number on a piece of paper and write the second number directly underneath it. Multiplying double digits requires breaking the problem into four multiplication equations and one addition calculation.
Full Answer >Multiply two-digit numbers by doing two separate multiplication problems, one with the tens column of one of the numbers and one with the units column of that number, and adding the answers together. The sum of the two numbers is the answer to the multiplication problem.
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