Broken Calculator

Use a kids calculator to strengthen mental math skills.
Some number keys can be temporarily disabled to challenge mental calculations.
Play a math game involving nines.
Text to speech is used to hear each math solution.
This app is free and contains no ads.
No personal information is gathered.
There is a quit button so the app will not run in the background when you stop playing.
State Standard: Use mental arithmetic to solve problems involving addition, subtraction, multiplication, and division problems.