Digital Puzzles with GOOGLE Slides™. 3 Puzzles x 12 Math Problems. Students solve the math problems and drag the puzzle pieces over the correct answers to complete the puzzles. Features of using Digital Puzzles: - Self Checking - Digital / Interactive / Online -Paperless - Engaging & Fun! There are 3 slides. Each slide includes 12 unique math problems and one puzzle. You will also get a google slide file with answers. Finding a percent of a number. Difficulty Level: Easy. Percents: 1%, 10