0
To find the digit sum of a number you plus the first 2 numbers together, example:
the number 18, 18 is made up of 2 digits 1 and 8.
If you add the 2 digits together you get a total of 9.
So that is the digit sum of 18.
But if you use a higher number like 66 then the method has a small change.
First if you add the two digits together it becomes 12.
But 12 isn't a single digit sum.
So again the 2 digits have to be added together to make a single digit sum.
1+2=3 so 3 is the single digit sum for the number 66.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What is the sum of greatest 3-digit number?
The greatest 3-digit number is 999. 9+9+9 = 27 The sum of the greatest 3-digit number is 27.
The units digit of a two digit number exceeds twice the tens digit by 1 what numbers if the sum of its digit is 10?
The units digit of a two digit number exceeds twice the tens digit by 1. Find the number if the sum of its digits is 10.
Number in the tens place is three times the number in the ones place and the sum is 12 what is it?
i am a two digit # my tens digit# is 3 times my ones digit #and the sum of my digit is 12 what am i
If the units digit and the hundreds digit of the number 513 were reversed find the sum of the original number and the new number?
"If the units digit and the hundreds digit of the number 513 were reversed..." 315 'find the sum of the original number and the new number." 513+315=828
I am a square number. I am an odd two-digit number. The sum of my digits is a two-digit number. What number am I?
49
What do you call the value of each digit in a number based on the location of the digit?
sum
What is the sum of greatest 3-digit number?
The greatest 3-digit number is 999. 9+9+9 = 27 The sum of the greatest 3-digit number is 27.
The units digit of a two digit number exceeds twice the tens digit by 1 what numbers if the sum of its digit is 10?
The units digit of a two digit number exceeds twice the tens digit by 1. Find the number if the sum of its digits is 10.
What is a seven digit number that has a sum of 5?
There is no seven-digit number that has a sum of 5. The smallest seven-digit number is 1,000,000, which already has a sum greater than 5.
Number in the tens place is three times the number in the ones place and the sum is 12 what is it?
i am a two digit # my tens digit# is 3 times my ones digit #and the sum of my digit is 12 what am i
What sum when 101111 added to the largest 6-digit number?
101117
What is the sum of smallest six digit number and greatest 5 digit number?
99999
If the units digit and the hundreds digit of the number 513 were reversed find the sum of the original number and the new number?
"If the units digit and the hundreds digit of the number 513 were reversed..." 315 'find the sum of the original number and the new number." 513+315=828
How many eight digit number are there for which the sum of digit is 4?
120
What is the largest 3 digit number which has a digit sum of 9?
300
It is a three digit number it is the cube of a single digit number it is an even number it has the digit sum of 8?
8 cubed = 512
What is a two digit prime number with each digit a prime number and the sum a prime number?
23
