3619
67
23 :]
If the digit sum of a number adds up to 9 then it is divisible by 9.
999
204
No. The only digit of 2 is ' 2 '. It adds up to 2.
It's a four digit number, 2345
Assuming that "adds up to" means "its digits add up to" 888
You line up the last numbers and then add it!
Rounding up implies the number is smaller than 1000. However, a number smaller than 1000 cannot be a 4-digit number. So there cannot be such a number. What was said is wrong. The greatest 4 digit number that rounds up is 999.9
It can have up to 5 digits.
Well, honey, let me break it down for you. When you multiply a 4-digit number (ranging from 1000 to 9999) by a 1-digit number (ranging from 0 to 9), the result can be a 3-digit number (ranging from 0 to 8991). So no, the product of a 4-digit number and a 1-digit number is not always a 5-digit number. Math doesn't discriminate, darling.