Hi,

three digit number  

 My hundreds digit is 4 more than my ones digit, and my tens digit is their difference.

Question states***

  x = z + 4    or x - z = 4

  y = x - z

  y = 4

If... I am understanding Your question properly, several numbers would work:

 440,541, 642, 743, 844, and 945  

RELATED QUESTIONS

i am a 3 digit number my hundreds digit is the smallest odd number my tens digit is five... (answered by stanbon)

I am a three digit number. My tens digit is five more than my ones digit. My hundreds... (answered by DrBeeee)

i am a six digit number my ones digit is 4 my tens digit is twice my ones digit my... (answered by phojhe001,Edwin McCravy)

My tens' digit is twice my hundreds digit. My one's digit is 3 more than my tens' digit.... (answered by josmiceli)

My thousands digit is twice my hundred thousands digit. My hundreds digit is 4 less than... (answered by ankor@dixie-net.com)

I am a 5 digit number. my tens digit is the sum of my hundreds digit and thousands digit.  (answered by ankor@dixie-net.com)

I am a three digit number. My hundreds digit is one more than my ones digit, and my tens... (answered by richwmiller,MathTherapy)

I am a four digit number. 
My units digit and my hundreds digit are the same. 
I am... (answered by Edwin McCravy)

I am a four digit number 
the thousands digit and the ones digit are the same
The... (answered by ikleyn)