Browse 350+ addition and subtraction practice stock illustrations and vector graphics available royalty-free, or start a new search to explore more great stock images and vector art. Add or subtract.

Various statistical approaches have been proposed to model scene backgrounds. The concept of background subtraction also has been extended to detect objects from videos captured from moving cameras.

My son needed a way to practice his math, and I was working & attending school, so I came up with this. It generates two random 3-digit numbers as arguments for the equation. It also randomly ...