I created these activities to use in math tubs. I have found great success using math tubs in my classroom. My class is split up into 4 groups based on their needs during each unit of study. The students work with partners in the tubs while I pull small groups. It's a great way to differentiate, and the students love working in the tubs (standard specific activities) around the room. You can purchase this unit or my "Numbers and Operations in Base Ten" unit at my teachers pay teachers store by clicking the picture above. I hope this is a helpful resource for you :)
Have a wonderful evening!