Depending on your curriculum, you are likely looking for one of these:
A modern series for schools with an emphasis on the German language. Where to Find Solutions (Reshebniki) skachat reshebnik nemetskogo iazyka 4 klassa
If you are struggling with pronunciation, check for the "Audio-CD" or MP3 tracks that accompany the Bim or Averin textbooks; they are often available for free on publisher websites. Depending on your curriculum, you are likely looking
Instead of downloading files that might contain viruses, many students and parents use "GDZ" (Ready Homework) websites to view solutions directly in the browser: Depending on your curriculum