Provide practice in Adding 3-digit numbers with partial sums to your Grade 3 math students with these Boom Cards. The addition is made is easy by color-coding numbers by place value. Check out these no-prep, self-checking, interactive, cute, and simple digital boom cards. A huge time-saver for the teachers. Awesome math resource for Grades 2, 3, and 4. Add 3-digit numbers with partial sums. This resource can be used for: Practice for struggling studentsA fun activity for early finishersOnline le