Question

Find the missing digit to make 18,59_ divisible by 9

Answer 1

18 / 9 = 2
59 / 9 = 6 remainder 5
5x must be divisible by 9
what is x?

Answer 2

the sum of all the digits must be a multiple of 9.
1+8+5+9 = 23, so the missing digit must be 4 in order to make it divisible by 9

Answer 3

ah

Answer 4

thanks, so add them all, then find a number that leaves it a whole number, not a decimal?

Answer 5

, no, find a number that makes it a multiple of 9 (9, 18, 27, 36, 45...)

Answer 6

add a number so its a multiple of 9
23 + 4 = 27 which is a multiple of 9

Answer 7

OOohh, okay. :D