This activity I made to help my students with not only their number sense, but addition and subtraction as well. It's a great tool to use to really have the kiddos think in terms of increasing by 1 or 10, and decreasing a number by 1 or 10. These Google slides include, 3 different worksheets, that offer a variety of numbers up to the 90s. There are Google text boxes already set in place. Your students will simple need to type into them. I used the font: Comforta and set it at a large size to