Educational math online game to color by numbers with Halloween Additions. Specifically, you must color simple additions and/or subtractions up to 10 or up to 20 to recreate Halloween drawings. Paint pixel drawings with colors according to the legend of numbers, after correctly solving the sums, applying the correct color to each pixel or square of the mosaic. Solve the simple sums and color the pixels to create Halloween mosaics. Discover the picture hidden in each addition mosaic coloring challenge. Fun Halloween sums game with a coloring legend to create fun pixelated mosaics. Click on the configuration wheel and select the addition and subtraction operations to practice, as well as the range of numbers: up to 10 or up to 20.