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1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1 is one example.

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Q: What numbers add up to 21 that have 1 digit?
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Related questions

How do you add a 3 digit number and a two digit number?

You line up the last numbers and then add it!


What 2-digit prime number has a sum of 10 when you add up its digits?

Two-digit prime numbers whose digits add up to 10 are:193773


How many two-digit numbers have digits that add up to 10?

To make the list of two-digit numbers with digits that add up to 10, first write the pairs of single-digit integers that add up to 10. They are (1,9), (2,8), (3,7), (4,6), (5,5). Then recognize that each of these pairs of numbers, except 5, can be combined in two different ways to make two-digit numbers that satisfy the problem. 19 and 91 28 and 82 37 and 73 46 and 64 55 So there are nine two-digit numbers with digits that add up to 10.


What 4 numbers add up to 21?

25


What two numbers multiply to 21 and add to 6?

what two factors of -21 add up to -6


How many two digit numbers add up to the number 8?

44 62 35 17 26 53 Six numbers add up to 8


What six odd numbers add up to 100?

21, 21, 21, 21 , 15, 1


How many three digit numbers have digits that add up to zero?

None. The only way for it to be possible would be 3 zeros which is not considered a 3 digit numbers.


Composite numbers up to100 have 1 as their unit's digit?

Composite numbers are integers greater than 1 that can be divided evenly by numbers other than 1 and themselves. In the case of numbers up to 100, the unit's digit refers to the digit in the ones place. The claim that composite numbers up to 100 have 1 as their unit's digit is incorrect, as composite numbers can have any digit in the ones place depending on their factors.


What two concecutive numbers add up to 41?

20 and 21


What 3 consecutive numbers add up to 18?

21


What 4 single digit numbers add up to 24?

28