3.1 Multiples Exercise

There are many positive two-digit multiples of 7, but only two of these multiples have a digit sum of 10. (The digit sum of an integer is the sum of its digits.) What are these two multiples of 7?

(note: type in separate way by space or fill the box)

What is the sum of all positive integers less than 100 that are multiples of 13?

What is the least positive number that can be added to 173 so that the result is a multiple of 20?

What is the smallest positive four-digit multiple of 17?

What is the greatest four-digit multiple of 18?

What is the greatest three-digit multiple of 33 that can be written using three different digits?

How many integers between 17 and 2678 are multiples of 11?