I created this Number Sense Differentiated activity to challenge my students with their number sense abilities using 2-digit numbers. It's a great tool to use to really have your kiddos think in terms of number order and sequencing, as well as increasing by 10, and decreasing a number by 10; as well as increasing by 1, and decreasing by 1, etc. I have differentiated the worksheets depending on your students abilities. I have included 2 different worksheets that are differentiated:Page 1 and 2 (