What is the smallest three-digit number that has a digit sum of 8?

107

1+0+7=8

If you can put 008 then that would be even smaller.

Three-digit number made up of

- Hundreds digit

- Tens digit

- Digits unity

We denote it as HTU

The numbers seemingly available to the number 8 - 1 = 7 0,1,2,3,4,5,6,7

Explanation

At the beginning can not be zero, the smallest is the number one

H = 1

hundreds digit indicates

1 * 100 Unity

2 * 100 Unity

3 * 100 Unity ...

because we wrote the lowest possible

...

T - at the scene of tens of type 0

Explanation

the tens digit is 1 * 10 unity

2 * 10 unity

3 * 10 unity ...

because we wrote here a value of 0

the smallest value in number there is unity U and there you enter the digit 7

digit unity means

1 * 1 unity

2 * 1 unity

3 * 1 unity ...

because we wrote here a value of 7

because we wrote here a value of 0

Answere 107