This is my Rounding Decimals Notes and Activity for ISN. This set has notes rounding decimals in 2 forms (filled and outlined) for the left side of the ISN, an activity to practice the concept that can also be a math center, and 4 different practice problems for the right side of the ISN. A key is included for the practice problems. This follows Math TEKS 5.2C and CCSS 5.NBT1, 5.NBT2, and 5.NBT4. I hope you enjoy these notes and activity and find them useful!