students can use Googleâ„¢ Sheets to solve up to 25 single-digit addition Quiz and find hidden pixel art.Click the preview to see all questions for each level. The 25-space calculation increases the basic calculation ability by addition the numbers written on the horizontal and vertical 5 cells to fill a total of 25 cells. It is composed simply, but the effect is said to be miraculous.Correct answers are marked with red text color, and students are rewarded with colored pixels that appear on hidde