Question

I am a 3-digit whole number. if you double me, I remain a 3-digit number. if you add 2 to me after I am doubled, I become a 4-digitnumber. what number am i?

Answer 1

499+499=998+2=1000 got it?

Answer 2

1000 is a four digit number

1000 - 2 = 998 (A three digit number)

998/2 = 499 (A three digit number)

Your answer is 499

Check your work:

2(499) + 2 = 1000