Numerical Jigsaw is a small but very interesting math puzzle on paper by Erich Friedman.
Arrange the six vertical strips within the rectangle as shown in the image of the Numerical Jigsaw math puzzle so that each row contains a true equation. Due to the font and digit’s used each strip can be rotated 180 degree.
Numerical Jigsaw math puzzle looks a bit like a paper version of puzzle game Digi Disc. Happy Puzzling!