In place value, a period is each group of three digits separated by commas in a multidigit number.
A group of three digits separated by commas in a multidigit number is typically referred to as a "thousands separator." This format is used to enhance readability by breaking large numbers into manageable parts, such as 1,000 or 1,000,000. The commas indicate the transition between thousands, millions, and so on, helping to distinguish the value of each segment.
28
998 is less than 1000, the ones digit is 8, and the other two digits, 9's, are identical to each other.
Add the digits together. The sum of the digits of 23 is 5.
In place value, a period is each group of three digits separated by commas in a multidigit number.
A group of three digits separated by commas in a multidigit number is typically referred to as a "thousands separator." This format is used to enhance readability by breaking large numbers into manageable parts, such as 1,000 or 1,000,000. The commas indicate the transition between thousands, millions, and so on, helping to distinguish the value of each segment.
28
1
998 is less than 1000, the ones digit is 8, and the other two digits, 9's, are identical to each other.
Add the digits together. The sum of the digits of 23 is 5.
It has five digits each of them representing numerical quantities
When multiplying numbers with significant digits, count the total number of significant digits in each number being multiplied. The result should have the same number of significant digits as the number with the fewest significant digits. Round the final answer to that number of significant digits.
The number of strings of four decimal digits that have exactly three digits which are nine is the number of ways to choose three places to choose the nines multiplied by the number of possibilities for the other digits (because you can put all of the possibilities in an array so that each column has a different way of arranging the nines and that each row has a different set of other digits (because they do not affect each other)). The number of ways to choose the three places to choose the nines is the same as the number of ways of choosing 4-3=1 spot for there not to be a nine. The number of ways of choosing 1 spot where there are 4 spots is 4 (the first, the second, the third, or the fourth). Since there are 9 digits that are not nine, the number of choices for the other digits is 9 (since there is only one digit). Thus, there are 4*9=36 strings of four decimal digits that have exactly three digits which are nine.
None.
by moving each digits
By the sum of its digits: 10. By each of its individual digits: 11.