Probably 19998: from -9998 to 9999 (both inclusive) whose sum is 9999.
Using a calculator will make it easier
The smallest four digit number is 1000. It is even so 1001 is the smallest four digit number that is odd.
9
9876 is the largest four digit number you can make if all the digits must be different.
I think the highest number in the world is Gogol. which is a one digit number followed by 100 zero's. But I say the largest number in the world is whatever you can make it!
It depends on whether you mean the highest digit that you add or subtract or multiply by!
what is the largest 4-digit number you can make
It is already a four-digit number.
100012
Probably 19998: from -9998 to 9999 (both inclusive) whose sum is 9999.
what is the greatest 4-digit number you can make with the digit 0,1,2,3, and 4
6
Using a calculator will make it easier
The smallest four digit number is 1000. It is even so 1001 is the smallest four digit number that is odd.
In the base ten system, the highest single digit is 9. That would make the highest thousand 9000. One more thousand than that is 10,000 which, for some people, is a different category. If not, you can go all the way up to 999,000.
1000