Teachers, save “2.NBT.7, 2.NBT.9, Subtraction on a Numbe…” to assign it to your class.

Teacher Notes (not visible to students)

Task Description: This task focuses on the meaning of subtraction as the distance between two numbers. By asking students if you can make friendlier numbers, it forces them to think about this idea and have to explain why it works. Students do not have to use a number line, but it will help them see how the subtraction problem can be shifted.